"Not to be realized from another, peaceful,
      Not elaborated by elaborations,
      Not conceptualized, and not a separate entity,
      That is the characteristic of ultimate reality."
      
      Nâgârjuna : Mûlamamadhyamakakârika, 18:9.
      
      "The Buddha said that all things have two natures. 
      Those found by perceivers of reality
      and those found by perceivers of 
      falsity. 
      Objects of perceivers of reality are things as they are. 
      Objects of perceivers of falsity are conventional truths." 
      
      Candrakîrti : Madhyamakâvatâra, 6:23.
      
      
        
        
          
            | Relative to the adopted "established conclusion" 
            ("siddhânta") or tenet, the Two Truths ("satyadvada"), the division between conventional 
            truth ("samvriti-satya") and ultimate truth ("paramârtha-satya"), can 
            be viewed (as in Platonism) as two  
            levels of reality (two types of truth) or as two objects of knowledge. 
            The former view comes close to abolishing the Two Truths, replacing 
            the division by the One Truth of the ultimate (negating conventional 
            truth as a whole). The latter maintains the division. This last 
            tenet is rightly considered superior. | 
        
        
       
      In the Critical Mâdhamaka of Tsongkhapa, the 
      basis of the division is not two levels of reality, but two objects of 
      knowledge defined as the two epistemic isolates (or "natures") of a 
      single given phenomenon. Ultimate reality is not "higher" than conventional reality, 
      but merely a property of every possible phenomenon. 
      Every existing thing is an object of knowledge possessed by a subject or 
      object-possessor. But every existing thing has two natures : a 
      conventional one & an ultimate one. Conventional knowledge apprehends the 
      conventional nature of an object, ultimate knowledge prehends the 
      ultimate nature of the same object. When the conventional, deceptive 
      nature is apprehended, the ultimate, nondeceptive nature is excluded and
      vice versa. Except in the mind of a Buddha, for whom the two truths 
      are simultaneous.
            
            Although the division between these Two Truths is born out of the 
      yogic experience gathered during meditative equipoise, drawing the 
      division between the world as experienced by ordinary beings versus 
      the same world as witnessed by Superior Bodhisattvas and Buddhas, it also 
      points to the philosophical difference between, on the one hand, a 
      "relative" reality appearing otherwise as it is (i.e. a deceptive 
      conventional truth), and therefore deemed "illusionary", and, on the other 
      hand, reality-as-it-is, also called 
            "suchness", i.e. the nondeceptive, "absolute" reality 
      ("dharmadhâtu").
      
      The Two Truths are implied by the
      Third Noble 
      Truth, the Truth of Cessation. Ordinary reality is unsatisfactory 
      (First Noble Truth of Suffering) and this suffering is caused by ignorant 
      craving (Second Noble Truth of Arising). The possibility of ending this 
      cycle of continuous suffering (sickness, old age, death, experiencing what 
      is not wanted and not experiencing what is wanted) was realized by the 
      Buddha when he awoke from the dream all sentient beings are still 
      dreaming. At this point, he saw the reality of things just as they are, 
      namely their ultimate nature or ultimate, absolute reality. Deciding to 
      remain in this world of conventional truths, the Buddha used the 
      conventions of "samsâra" 
      to point out the right direction : Cessation. 
      
      The doubleness of all things part of our world, the distinction between how things 
      appear and 
      how they truly are is recurrent in many, if not all, spiritual 
      systems. The basis question before us therefore is : What is truly real ? 
      Answering this in the context of the Buddhadharma implies study, 
      reflection & meditation. Nothing else will do. Without putting in  the necessary effort 
      with great diligence, the question will never be answered and the truth-concealing 
      realities will not be eliminated. If so, cessation, the end of 
      unsatisfaction & suffering cannot be seen.
      
      Explanations of the Two Truths are found in the assertions of each of the 
      four tenet systems on
      emptiness 
      ("śûnyatâ") exegetically developped by the Gelugpas, the religious order founded by 
      Tsongkhapa (1357 - 1419). Ranked from the highest, most profound to the 
      lowest, these systems are :
      
      Great Vehicle systems : 
      1) Middle Way School or "Mâdhyamika", traditionally divided by 
      the Tibetans in two subsystems : the 
      Autonomy system ("Svâtantrika Mâdhyamika") and the Consequence system 
      ("Prâsangika Mâdhyamika") ;
      2) the Mind-Only School or "Cittamâtra" (also : Yogâcâra) ;
      Lesser Vehicle systems :
      3) the Sûtra School or "Sautrântika" ;
      4) the Great Exposition School or "Vaibhâsika".
      
      As various authors (Hopkins, 
      1983, Newland, 
      1999) have extensively & clearly explained the differences between these 
      tenets, nothing of the sort will be repeated here.  Although often 
      considered as a single homogeneous system, radically different Mâdhyamika 
      views emerged, like those between  idealist Sakya authors as Gorampa Sönam Sengé (1429 - 1489) 
      -so-called Yogâcâra Mâdhyamaka- and critical interpretations, like those of Tsongkhapa (Thakchoe, 
      2007). And according to the Jonang school, the Middle Way is crowned by 
      other-emptiness (not self-emptiness), affirming the inherently existing 
      enlightened qualities of our Buddha-nature. As will be shown, this last 
      tenet is experiential, not philosophical or logical (and so not a "tenet" 
      at all).
      
      In Prâsangika-Mâdhyamaka, the highest tenet system, the difference 
      between the Two Truths is established on the basis of a single 
      ontological identity with distinct conceptual isolates. All things 
      have two natures or properties, those based on reality and those based on falsities (cf. 
      Chandrakîrti in his Mâdhyamakâvatâra). A sprout, insofar as it 
      conceals its lack of inherent existence, is a falsity. The same sprout, 
      insofar as its ultimate nature is known as lacking own-form, is true. Both 
      truths share the same ontological status, but their difference is based on 
      the object of knowledge. Conventional truth has the false nature of things as 
      object. Ultimate truth has the true nature of things as object. Although they share 
      the same ontological identity (the same sprout), their mode of appearance 
      differs : the conventional nature of the sprout is deceptive (appears 
      inconsistent with its true mode of existence), while its ultimate nature 
      is nondeceptive and appears as it is. The first is an illusion, the 
      second not.
      
      The Two Truths point to these two natures, these different conceptual 
      objects designated on the basis of a single phenomenon. The same sprout 
      can be known as a conventional nature (deceptive) and as an 
      ultimate nature (nondeceptive). Although the Two Truths 
      presuppose a common, single phenomenon or entity as their common referent, 
      they are not merely epistemological or linguistic distinctions, for 
      ultimate truth has the ultimate nature of the sprout as object (namely 
      emptiness), while conventional truth has the conventional nature of the 
      same entity as object (namely illusionary own-form). Emptiness does not negate 
      conventionality, but substantial instantiation. The dual natures are 
      locked together within each phenomenon, and so constitute the same 
      phenomenon. Both truths possess the same ontological status, and are thus 
      grounded in the dual nature of every single phenomenon. The nondeceptive 
      nature of the empty phenomenon constitutes its ultimate truth. 
      
      For Chandrakîrti, Śântideva & Tsongkhapa, the Two Truths have the two 
      natures of each and every phenomenon as their ontological reference, and 
      so their distinction is not purely epistemological, but rooted in their 
      identical ontological status, and so ultimate truth is not higher than 
      conventional truth (as the idealists claim). Although verified along 
      different epistemic pathways, they have an equal ontological status and 
      soteriological value. 
      
      For Tsongkhapa, conventional truth is an object found by an empirically 
      valid cognition perceiving mistaken objects of knowledge and ultimate truth 
      is an object found by a reasoning consciousness perceiving reality as 
      it is, unmistaken. Although conventional truth is valid insofar as conventionality 
      is concerned, it represents its object in a deceptive way and is therefore 
      false. While this object is in reality not substantially instantiated, 
      conventional truth represents it as such. So in this view, invalid 
      conventional knowledge remains possible, while for the idealists all 
      conventional realities are deceptive and so false or invalid, blurring the 
      possibility of establishing conventional distinctions between valid & 
      invalid conventional knowledge. If per definition conventionality is 
      invalid, then compassionate action can never be valid. This is 
      unacceptable.
      
      Ultimate truth does not 
      misrepresent its object, does not conceal the truth of its object, but 
      sees it as it is (suchness). For Tsongkhapa, empirical truths are not 
      posited by ignorance. His object of negation is not conventionality as 
      such, but the substantial instantiation of phenonema, or, which is the 
      same, not knowing phenomena as dependently arisen, but as independent, 
      self-powered, independent phenomena with own-power ("svabhâva").
      
      
      