Do not repeat after me words that you do not understand. Do not merely put on a mask of my ideas, for it will be an illusion and you will thereby deceive yourself.
We are students of words: we are shut up in schools, and colleges, and recitation -rooms, for ten or fifteen years, and come out at last with a bag of wind, a memory of words, and do not know a thing.
Give me the storm and tempest of thought and action, rather than the dead calm of ignorance and faith! Banish me from Eden when you will; but first let me eat of the fruit of the tree of knowledge!
Doctor Who: You want weapons? We're in a library. Books are the best weapon in the world. This room's the greatest arsenal we could have. Arm yourself!(from Tooth and Claw in Season 2)
The relation between what we see and what we know is never settled. Each evening we see the sun set. We know that the earth is turning away from it. Yet the knowledge, the explanation, never quite fits the sight.