Pity is not enough better than indifference to benefit materially either agent or recipient.

All great discoveries are made by men whose feelings run ahead of their thinking.

Science is busy with the hither-end of things, not the thither-end.

In a life which has meaning in it, past and future sustain each other.

Hell is both sides of the tomb, and a devil may be respectable and wear good clothes.

A man's longest purposes will be his best purposes. It is true, life is short and uncertain; but it is better to live on the short arc of a large circle than to describe the whole circumference of a small circle.

Faith is among men what gravity is among planets and suns.