My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

I am enough of an artist to draw freely upon my imagination.

Morality is of the highest importance - but for us, not for God.

Science without religion is lame; religion without science is blind.

I maintain that the cosmic religious feeling is the strongest and noblest motive for scientific research.

The word 'God' is for me nothing more than the expression and product of human weaknesses, the Bible a collection of honorable, but still primitive legends which are nevertheless pretty childish. No interpretation, no matter how subtle, can (for me) change this.