Full Idea
Whoever thinks more deeply knows that he is always wrong, whatever his acts and judgments.
Gist of Idea
Deep thinkers know that they are always wrong
Source
Friedrich Nietzsche (Human, All Too Human [1878], 518)
Book Reference
Nietzsche,Friedrich: 'Human, All Too Human', ed/tr. Faber,Marion [Penguin 1994], p.238