When the facts change, I change my mind – what do you do, sir?
(on being accused of expressing views that were inconsistent with views he had previously held)
Descartes commanded the future from his study more than Napoleon from the throne.
The only ultimate disaster that can befall us, I have come to realize, is to feel ourselves at home here…
The irrationality of a thing is no argument against its existence, rather a condition of it.