Action springs not from thought, but from a readiness for responsibility.

The essence of optimism is that it takes no account of the present, but it is a source of inspiration, of vitality and hope where others have resigned; it enables a man to hold his head high, to claim the future for himself and not to abandon it to his enemy.

It is very easy to overestimate the importance of our own achievements in comparison with what we owe others.

We must learn to regard people less in light of what they do or omit to do, and more in the light of what they suffer.

Only he who believes is obedient and only he who is obedient believes.