These are quotes that I have retired from my website's banner, but still quite like.
"On two occasions I have been asked, ‘Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?’ [...] I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question."- Charles Babbage, Passages from the Life of a Philosopher (1864)
"But that we shall be better and braver and less helpless if we think that we ought to enquire, than we should have been if we indulged in the idle fancy that there was no knowing and no use in seeking to know what we do not know;-that is a theme upon which I am ready to fight, in word and deed, to the utmost of my power." - Socrates, the Meno (380 BCE)