Sincerity is the foundation of the spiritual life.

It's not enough merely to exist. Every man has to seek in his own way to make his own self more noble and to relize his own true worth.

The destiny of man is to be more and more human.

Only those who respect the personality of others can be of real use to them.

The highest knowledge is to know that we are surrounded by mystery.

The man who has become a thinking being feels a compulsion to give every will-to-live the same reverence for life that he gives to his own. He experiences that other life in his own.

We all owe to others much of the gentleness and wisdom that we have made our own; and we may well ask ourselves what will others owe to us