The end of the human race will be that it will eventually die of civilization.

The world when seen through a little child's eyes, greatly resembles paradise. Happiness is doing with a smile what you have to do anyway. This time, like all time, is a very good one if we but know what to do with it.

The man is only half himself, the other half is his expression.

It requires a great deal of boldness and a great deal of caution to make a great fortune, and when you have it, it requires ten times as much skill to keep it.

The law of nature is alternation for evermore. Each electrical state superinduces the opposite.

We do not count a man's years until he has nothing else to count.

All science is transcendental or else passes away.