Full Idea
It is clear that a sufficient and yet at the same time general sign of truth cannot possibly be provided.
Gist of Idea
A sufficient but general sign of truth cannot possibly be provided
Source
Immanuel Kant (Critique of Pure Reason [1781], B083/A59)
Book Reference
Kant,Immanuel: 'Critique of Pure Reason', ed/tr. Guyer,P /Wood,A W [CUO 1998], p.197
A Reaction
In relation to the quest of Sextus Empiricus to find the 'criterion' of knowledge, this makes Kant a sceptic. It certainly seems to rule out any foundationalist view of knowledge. (Clearly Kant believes that an account of knowledge is possible).