True religion is real living; living with all one's soul, with all one's goodness and righteousness.

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.