It sometimes strikes me that the whole of science is a piece of impudence; that nature can afford to ignore our impertinent interference. If our monkey mischief should ever reach the point of blowing up the earth by decomposing an atom, and even annihilated the sun himself, I cannot really suppose that the universe would turn a hair.

The sin which is unpardonable is knowingly and wilfully to reject truth, to fear knowledge lest that knowledge pander not to thy prejudices.

The ordinary man looking at a mountain is like an illiterate person confronted with a Greek manuscript.

Astrology has no more useful function than this, to discover the inmost nature of a man and to bring it out into his consciousness, that he may fulfil it according to the law of light.

I will interpret every phenomenon as a particular dealing of God with my soul

Don't talk for five minutes, there's a good chap! I've a strange feeling come over me--almost as if I were going to think!

In the absence of willpower the most complete collection of virtues and talents is wholly worthless.