In Cracking The Walnut: Understanding the Dialectics of Nagarjuna, Thich Nhat Hanh explains how in the four conditions out of which a phenomenon arises (seed condition, continuity condition, object of cognition as condition, supportive condition) we can not find the self-nature of the phenomenon itself.
The text which he is explaining, The Verses on the Middle Way by Nagarjuna, conclude this about the matter:
- The self-nature of phenomena
is not found in the conditions.
Since there is no self-nature,
how could there be an other-nature?
To illustrate this point Thich Nhat Hanh uses the example of fire.
For example, we may look for the self-nature of a flame in a box of matches. In the box are matches made of wood and sulfur. Outside the box is oxygen. When we search inside the wood, sulfur, and oxygen can we find the self-nature of the flame? Whether the match has already been lit or not, we cannot find this self-nature. What we call the self-nature of something cannot be found in its conditions at all.
My question is, how can Nagarjuna make the leap that because self-nature is not found in the causes or grounds out of which a phenomenon arises that therefore said phenomenon does not possess self-nature? For instance, if we at first assume that objects possess a separate self-nature and we take the example of ice instead of fire, we see that the conditions out of which ice arises (freezing temperatures, water, air pressure) do seem to possess something resembling the self-nature of their product. This is why I am confused when Thich Nhat Hanh uses the example of fire to illustrate the point -- surely there are other phenomena, like ice, which don't fit the rule?