Full Idea
Knowledge is certain cognition of something that is true.
Gist of Idea
Knowledge is certain cognition of something that is true
Source
William of Ockham (Expositio super viii libros [1340], Prologue)
Book Reference
Ockham,William of: 'Ockham's Philosophical Writings', ed/tr. Boehner,P [Hackett 1990], p.4
A Reaction
This view has problems. William is not facing up to the sceptical questions which can shake any degree of certainty, and also that someone who lacked self-confidence might know many things while always feeling uncertain about them. 'Cognition' must go!