Science is organized knowledge. Wisdom is organized life.

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.

Those who see the invisible can do the impossible.

Everything excellent is as difficult as it is rare.

Confidence is contagious. So is lack of confidence.

Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.

If we don't believe in freedom of expression for people we despise, we don't believe in it at all.

Wise men speak because they have something to say; Fools because they have to say something.

Tomorrow hopes we have learned something from yesterday.

To a wise and good man the whole earth is his fatherland.

Nothing fixes a thing so intensely in the memory as the wish to forget it.

Just remember, once you're over the hill you begin to pick up speed.

Rest satisfied with doing well, and leave others to talk of you as they please.

I dream. Sometimes I think that's the only right thing to do.

Courage, above all things, is the first quality of a warrior.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Learn from the mistakes of others. You can never live long enough to make them all yourself.

Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

All imperfection is easier to tolerate if served up in small doses.

In moments of great grief, that’s where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.