Promises are like crying babies in a theater, they should be carried out at once.

What's done can't be undone.

If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.

Whatever the mind of man creates, should be controlled by man's character

It is tact that is golden, not silence.

Things which matter most must never be at the mercy of things which matter least.

You place too much importance... on the so-called purity of blood! You fail to recognize that it matters not what someone is born, but what they grow to be!

Men build too many walls and not enough bridges.

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

The most certain sign of wisdom is cheerfulness.

Those who know, do. Those that understand, teach.

Time wounds all heels.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

All great achievements require time.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

You always admire what you really don't understand.

Nothing is as easy as it looks.

Never ruin an apology with an excuse.

Wisdom begins at the end.

To avoid criticism say nothing, do nothing, be nothing.

Turn your wounds into wisdom.