Whoever despises the high wisdom of mathematics nourishes himself on delusion and will never still the sophistic sciences whose only product is an eternal uproar.

Learning never exhausts the mind.

Simplicity is the ultimate sophistication.

A beautiful body perishes, but a work of art dies not.

To make a perfume, take some rose water and wash your hands in it, then take a lavender flower and rub it with your palms, and you will achieve the desired effect

Being willing is not enough. We must do.

Learning is the only thing the mind never exhausts, never fears, and never regrets.

There are three classes of people: those who see, those who see when they are shown, those who do not see.

Life is pretty simple: You do some stuff. Most fails. Some works. You do more of what works.

Whatever you do in life, if you want to be creative and intelligent, and develop your brain, you must do everything with the awareness that everything, in some way, connects to everything else.

When you put your hand in a flowing stream, you touch the last that has gone before and the first of what is still to come.

I welcome questions. I hate assumptions.

The fact that we can't see the beauty in something doesn't suggest that it's not there. Rather, it suggests that we are not looking carefully enough or with a broad enough perspective to see it.

People want us, or want us dead, because of what we are, not who we are. It's hard.~Angel

Whatever worth doing at all is worth doing well.

I sold my memoirs of my love life to Parker Brothers and they are going to make a game out of it.

If I were to remain silent, I'd be guilty of complicity.

Certain materials suggest ideas and ways of working.

Where would the Rockefellers be today if old John D. had gone on selling short-weight kerosene ... to widows and orphans instead of wisely deciding to mulct the whole country.

I don't have too many friends. I have only a few people who I really love.

The struggle for your own character is the struggle for the nation's character.