It's no use filling your pocket with money if you have got a hole in the corner.

The important work of moving the world forward does not wait to be done by perfect men.

Only those who know the supremacy of the intellectual life──the life which has a seed of ennobling thought and purpose within──can understand the grief of one who falls from that serene activity into the absorbing soul-wasting struggle with worldly annoyances.

Death is the only physician, the shadow of his valley the only journeying that will cure us of age and the gathering fatigue of years.

It is good to be helpful and kindly, but don't give yourself to be melted into candle grease for the benefit of the tallow trade.

Alas! the scientific conscience had got into the debasing company of money obligation and selfish respects.

Things are achieved when they are well begun.