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

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

Desire is the very essence of man.

If you are a parent, open doors to unknown directions to the child so he can explore. Don't make him afraid of the unknown,give him support.

Proverbs are short sentences drawn from long experience.

Every act of creation is first an act of destruction.

The place where you made your stand never mattered. Only that you were there...and still on your feet.

Wonder is the beginning of wisdom.

Never argue with an idiot. They drag you down to their level and then beat you with experience.

Thoughts without content are empty, intuitions without concepts are blind.

The greatest power we have is the power of choice.

Adapt what is useful, reject what is useless, and add what is specifically your own.

Wisdom is not the product of schooling, but of the lifelong attempt to acquire it.

It is divinity that shapes, not only your ends, but also your acts, your words and thoughts.

Without courage, wisdom bears no fruit.

Honesty is the first chapter in the book of wisdom.

Science may set limits to knowledge, but should not set limits to imagination.

Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.

Men build too many walls and not enough bridges.

Destiny is not a passive agent that lies in the lap of the Gods, but is an active instrument that lies in your own hands to shape as you will.

Muddy water is best cleared by leaving it alone.