‘Let us not concur casually about the most important matters,’ said Heraclitus (Kahn XI, D. 47).
‘The first thing that the Will to Learn supposes is a dissatisfaction with one’s present state of opinion,’ said Peirce (EP2:47). (Dissatisfaction with someone else’s present state of opinion, on the other hand, is more conducive to contention than to learning.)
Each time I find something worth saying, it is because I have not been satisfied to coincide with my feeling, because I have succeeded in studying it as a way of behaving, as a modification of my relations with others and with the world, because I have managed to think about it as I would think about the behavior of another person whom I happened to witness.
— Merleau-Ponty (1948, 52)
Anything worth saying is informative because its dialogic involves all three ‘persons’ (first, second and third) in its dissatisfaction.