To the wisest man, wide as is his vision. Nature remains of quite infinite depth, of quite infinite expansion and all experience thereof limits itself to some few computed centuries and measured square miles.

Superstition! that horrid incubus which dwelt in darkness, shunning the light, with all its racks, and poison chalices, and foul sleeping draughts, is passing away without return. Religion cannot pass away. The burning of a little straw may hide the stars of the sky; but the stars are there and will reappear.

Nothing builds self-esteem and self-confidence like accomplishment.

I don't pretend to understand the Universe - it's a great deal bigger than I am.

To the vulgar eye, few things are wonderful that are not distant

It is a fact which escapes no one, that, generally speaking, whoso is acquainted with his worth has but a little stock to cultivate acquaintance with.

Biography is the only true history.