Work gives you meaning and purpose and life is empty without it.

A great building must begin with the unmeasurable, must go through measurable means when it is being designed and in the end must be unmeasurable.

Men in general judge more from appearances than from reality. All men have eyes, but few have the gift of penetration.

Quality is everyone's responsibility.

Jealousy contains more of self-love than of love.

Each day is a little life: every waking and rising a little birth, every fresh morning a little youth, every going to rest and sleep a little death.

But man is not made for defeat. A man can be destroyed but not defeated.

New Year's Resolution: To tolerate fools more gladly, provided this does not encourage them to take up more of my time.

Intelligence without ambition is a bird without wings.

There are many things that are essential to arriving at true peace of mind, and one of the most important is faith, which cannot be acquired without prayer.

I can definitely say the older I've got the better I've become at being a dad and a husband.

Every day I get up and look through the Forbes list of the richest people in America. If I'm not there, I go to work.

Life is a succession of moments. To live each one is to succeed.

I hope that in this year to come, you make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.

We may find in the long run that tinned food is a deadlier weapon than the machine-gun.

Rough diamonds may sometimes be mistaken for worthless pebbles.

There is one person who sends me three cards every year. One on New Year's, one for my birthday and the third that marks the anniversary of my flight into space.

To me, a building - if it's beautiful - is the love of one man, he's made it out of his love for space, materials, things like that.

I could talk food all day. I love good food.

Victory has a thousand fathers, but defeat is an orphan.

Early morning cheerfulness can be extremely obnoxious.

The best cure for the body is a quiet mind.

He who has imagination without learning has wings but no feet.

But I like not these great success of yours; for I know how jealous are the gods.