A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty. 

Innovation distinguishes between a leader and a follower.

Whenever I hear anyone arguing for slavery, I feel a strong impulse to see it tried on him personally.

It was the experience of mystery - even if mixed with fear - that engendered religion.

Man is a universe within himself.

Politics are very much like war. We may even have to use poison gas at times. 

There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.  

Wisdom is the landing pad of experience.

The best way to deal with an argument is to avoid entering into one.

We praise a man who feels angry on the right grounds and against the right persons and also in the right manner at the right moment and for the right length of time.

Any man may be in good spirits and good temper when he is well dressed. There ain't much credit in that.

It is difficult to violently suppressed people in the long run, as the example of the Soviet Union and the Eastern European countries has shown.