Man, biologically considered ... is simply the most formidable of all beasts of prey, and, indeed, the only one that preys systematically on its own kind.

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

A great many people think they are thinking when they are merely rearranging their prejudices.

The deepest principle in human nature is the craving to be appreciated.

Whenever two people meet, there are really six people present. There is each man as he sees himself, each man as the other person sees him, and each man as he really is.

Most unhappiness is caused because people listen to themselves... instead of talking to themselves.

The great use of life is to spend it for something that will outlast it.

If you can change your mind, you can change your life.

Act as if what you do makes a difference. It does.

You can alter your life by altering the state of your mind.

Real servants don't try to use God for their purposes. They let God use them for His purposes.

A smile is the light of personality.

Everybody that is born on the surface of this earth, has this wealth called time.

Understand both yourself and your enemy, and you shall always emerge victorious

Every experience is necessary wisdom.

Ideal conversation must be an exchange of thought, and not, as many of those who worry most about their shortcomings believe, an eloquent exhibition of wit or oratory.

Planet Earth, creation, the world in which civilization developed, the world with climate patterns that we know and stable shorelines, is in imminent peril.

The thing about living in New York is that there are other artists; that is the most difficult, I think they are the hardest critics.

You could say that my life's a mess. But, I'm still looking pretty in this dress.

In a bureaucratic system, useless work drives out useful work.

Now that Obama's president, it changes inner-city youths. They can now not just dream to be Lil Waynes and 50 Cents, but they can now dream to be Obamas.