Full Idea
Truth really belongs to the class of thoughts which are possible.
Gist of Idea
Truth is a characteristic of possible thoughts
Source
Gottfried Leibniz (Dialogue on Things and Words [1677], p.7)
Book Reference
Leibniz,Gottfried: 'Leibniz Selections', ed/tr. Wiener,Philip P. [Scribners 1951], p.7
A Reaction
I like the fact that this ties truth to 'thoughts', rather than peculiar abstract unthought entities called 'propositions', but I take it that thoughts which are possible but not thought will thereby not exist, so they can't be true.
Related Idea
Idea 19388 True and false seem to pertain to thoughts, yet unthought propositions seem to be true or false [Leibniz]