Doubt is the origin of wisdom

All great achievements require time.

Be silent or let thy words be worth more than silence.

And this sensitivity will create new friendships for you - friendships with trees, with birds, with animals, with mountains, with rivers, with oceans, with stars. Life becomes richer as love grows.

Love make us poets, and the approach of death should make us philosophers.

Be realistic: Plan for a miracle

If you don't want to slip up tomorrow, speak the truth today.

Think no vice so small that you may commit it, and no virtue so small that you may over look it.

The secret of life, though, is to fall seven times and to get up eight times.

Creativity is the process of having original ideas that have value.

We seldom realize, for example that our most private thoughts and emotions are not actually our own. For we think in terms of languages and images which we did not invent, but which were given to us by our society.

A mistake is always forgivable, rarely excusable and always unacceptable.

If you are neutral in situations of injustice, you have chosen the side of the oppressor.

To be wronged is nothing unless you continue to remember it.

Appearances often are deceiving.

Never put off for tomorrow, what you can do today.

There is a wisdom of the head, and... there is a wisdom of the heart.

Respect yourself if you would have others respect you.

Criticize the act, not the person.

We sometimes congratulate ourselves at the moment of waking from a troubled dream; it may be so the moment after death.

Convictions are more dangerous enemies of truth than lies.