Mountaintops inspire leaders but valleys mature them.

Where my reason, imagination or interest were not engaged, I would not or I could not learn.

All this contains much that is obviously true, and much that is relevant; unfortunately, what is obviously true is not relevant, and what is relevant is not obviously true.

It is conceivable that I might well be reborn as a Chinese coolie. In such case I should lodge a protest.

Safety and certainty in oil lie in variety, and variety alone.

The only guide to a man's conscience, the only shield to his memory is the rectitude and sincerity of his actions.

No stronger retrograde force exists in the world. Far from being moribund, Mohammedanism is a militant and proselytizing faith.