Nothing is more intolerable than to have to admit to yourself your own errors.

Great acts are made up of small deeds.

Tell the truth. Sing with passion. Work with laughter. Love with heart. 'Cause that's all that matters in the end.

Time wounds all heels.

And no one will listen to us until we listen to ourselves.

The road of excess leads to the palace of wisdom.

Only idiots refuse to change their minds.

No one cares how much you know, until they know how much you care

The cure for pain is in the pain.

Jealousy is the tribute mediocrity pays to genius.

Never ruin an apology with an excuse.

The path to success is to take massive, determined action.

Each problem that I solved became a rule which served afterwards to solve other problems.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

I mistrust the judgement of every man in a case in which his own wishes are concerned.

Science is organized knowledge. Wisdom is organized life.

You always admire what you really don't understand.

The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

You can best serve civilization by being against what usually passes for it.

Taste every fruit of every tree in the garden at least once. It is an insult to creation not to experience it fully. Temperance is wickedness.

Those who can not change their minds can not change anything.