The greatest obstacle to progress is not man's inherited pugnacity, but his incorrigible tendency to parasitism.

Worry is interest paid on trouble before it comes due.

Bereavement is the sharpest challenge to our trust in God; if faith can overcome this, there is no mountain which it cannot remove.

No healthy civilization can ever be reared on a foundation of devitalized work.

It is quite natural and inevitable that, if we spend sixteen hours daily of our waking lives in thinking about the affairs of the world and five minutes in thinking about God and our souls, this world will seem two hundred times more real to us than God.

The whole of nature, as has been said, is a conjugation of the verb to eat, in the active and in the passive.

There is no law of progress. Our future is in our own hands, to make or to mar. It will be an uphill fight to the end, and would we have it otherwise? Let no one suppose that evolution will ever exempt us from struggles. 'You forget,' said the Devil, with a chuckle, 'that I have been evolving too.