Look at the moon. How strange the moon seems! She is like a woman rising from a tomb. She is like a dead woman. One might fancy she was looking for dead things.
I have in my own life merely carried to the extreme that which you have never ventured to carry even halfway ; and what's more, you've regarded your cowardice as prudence, and found comfort in deceiving yourselves. So that, in fact, I may be even more "alive" than you are. Do take a closer look!
Science ... looks skeptically at all claims to knowledge, old and new. It teaches not blind obedience to those in authority but to vigorous debate, and in many respects that's the secret of its success.
The further and further we look out with our telescopes and the further and further we look in with our microscopes, the larger and larger and smaller and smaller the universe becomes in order to escape the investigation because we are the universe looking at itself.
Let a man learn to look for the permanent in the mutable and fleeting; let him learn to bear the disappearance of things he was wont to reverence; without losing his reverence; let him learn that he is here, not to work, but to be worked upon; and that, though abyss open under abyss, and opinion displace opinion, all are at last contained in the Eternal Cause.