Knowledge Quotes

Francis Bacon, Shakespeare, John Locke, Samuel Johnson and Einstein are all near the top, which gives the page its character: mostly people who thought about how we know things, rather than about how to feel clever. Johnson gives the most useful single line, in Boswell’s Life (1791): “Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.” Wittgenstein, in On Certainty (1969), says that knowledge is in the end based on acknowledgement.

A lot of the quotes people look for here are flagged. “As for me, all I know is that I know nothing” is credited to Socrates; see the note on the Wisdom page. “Contempt prior to investigation” is credited to Einstein, and a line about putting the Lord at every turn in the refuge of a miracle is credited to Galileo.