Wonder is the beginning of wisdom.

Nature is pleased with simplicity. And nature is no dummy

Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.

Mistakes are always forgivable, if one has the courage to admit them.

Anger begins in folly, and ends in repentance.

What can't be cured must be endured.

The noblest pleasure is the joy of understanding.

If I speak of myself in different ways, that is because I look at myself in different ways.

You are the bows from which your children as living arrows are sent forth.

Intelligence is the ability to adapt to change.

It's not a question of learning much.On the contrary.It's a question of UNLEARNING much.

The only real laughter comes from despair.

Nothing is as easy as it looks.

Jealousy is the tribute mediocrity pays to genius.

What you're thinking is what you're becoming.

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

Think globally, act locally.

Choose rather to be strong of soul than strong of body.

Strength does not come from physical capacity. It comes from an indomitable will.

Don't raise your voice, improve your argument.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.