The thought of death leaves me in perfect peace, for I have a firm conviction that our spirit is a being of indestructible nature; it works on from eternity to eternity, it is like the sun, which though it seems to set to our mortal eyes, does not really set, but shines on perpetually.

For the butterfly, mating and propagation involve the sacrifice of life, for the human being, the sacrifice of beauty.

He who knows no foreign languages knows nothing of his own.

He who possesses science and art, Possesses religion as well; He who possesses neither of these, Had better have religion.

Life's objective is life itself.

The loss of a much-prized treasure is only half felt when we have not regarded its tenure as secure.

Science has been seriously retarded by the study of what is not worth knowing and of what is not knowable.