Give me 6 hours to chop a tree, I will spend the first 4 sharpening my axe.
Nothing that is worth knowing can be taught.
Study without desire spoils the memory, and it retains nothing that it takes in.
The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
It is the mark of an educated mind, to entertain a thought without accepting it.
The deepest sin against the human mind is to believe things without evidence.
No Quran, no Bible, no Gita, no Cow, is greater than the human self.
Natural science does not simply describe and explain nature: it is part of the interplay between us and nature.
If I have seen further it is by standing on the shoulders of Giants.
Never mistake motion for action.