Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villains back of it all.

We pay a heavy price for our fear of failure. It is a powerful obstacle to growth. It assures the progressive narrowing of the personality and prevents exploration and experimentation. There is no learning without some difficulty and fumbling. If you want to keep on learning, you must keep on risking failure-all your life.

Mastery is not something that strikes in an instant, like a thunderbolt, but a gathering power that moves steadily through time, like weather.

For every talent that poverty has stimulated it has blighted a hundred.

Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villains back of it all.

Renewal is not just innovation and change. It is also the process of bringing the results of change into line with our purposes.

Some people strengthen the society just by being the kind of people they are.