Full Idea
Truth is its own standard.
Gist of Idea
Truth is its own standard
Source
Baruch de Spinoza (The Ethics [1675], II Pr 43S)
Book Reference
Spinoza,Benedict de: 'Ethics', ed/tr. Curley,Edwin [Penguin 1996], p.59
A Reaction
A gloriously bold solution to all the problems of epistemology. Read the whole of P43S to see the context.