That painter who has no doubts will achieve little.

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.

Let's be wise as the silence, strong as the wind, useful as the light; let's make of our lips a censer of the virtues.

To engage in experiments on heat was always one of my most agreeable employments.

Calumny crosses oceans, scales mountains and traverses deserts, with greater ease than the Scythian Abaris, and like him, rides upon a poisoned arrow.

And he who has dwelt with his heart alone, Hears all the music in friendship's tone. So better and better I comprehend How sorrow ever would be our friend.

Life deals from the bottom, sometimes, doesn't it?

People give us credit only for what we ourselves believe.

I try to see each new season as a new challenge because I have a new team to work with, new opponents to encounter, and often new ideas and theories to try

The people who were really important are the ones whose names are forgotten. And that's true of every movement that ever existed.

Praise out of season, or tactlessly bestowed, can freeze the heart as much as blame.

There's no doubt that I do have extremes of mood that are greater than just about anybody else I know.