Be kind, for everyone is having a hard battle.

Human behavior flows from three main sources: desire emotion and knowledge.

Science is nothing but perception.

Reality is created by the mind. We can change our reality by changing our mind.

If you do not take an interest in the affairs of your government, then you are doomed to live under the rule of fools.

A wise man speaks because he has something to say; a fool because he has to say something.

No one is more hated than he who speaks the truth.

Don't force your children into your ways, for they were created for a time different from your own.

Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.

Reality is created by the mind, we can change our reality by changing our mind.

Enjoy life. There's plenty of time to be dead. Be kind, for everyone you meet is fighting a harder battle.

Your propensity to succeed in life is largely dependent on your understanding of the concept, your ability to discover your purpose, and your willingness to pursue and act on your purpose.

We have a disturbed relationship with our past which religion cannot explain. We are primitive in unexplainable ways, our lives woven of the familiar and the strange, the reasonable and the insane.

Your anger is a gift.

I grew up with donkeys, as well as horses, but I'm more interested in donkeys.

You have to have wisdom and knowledge as well as virtue to preserve your rights and liberties.

No other practice will make one more attractive in conversation than to be well-read in a variety of subjects.

If deceiving the eye were the only business of the art... the minute painter would be more apt to succeed. But it is not the eye, it is the mind which the painter of genius desires to address.

I won't tell you how many hours a day I work because you wouldn't believe it. But don't worry; I am in bed at 11 p.m., sleep well and get up early, without an alarm clock.

I think the Democrats are actually worried he (Obama) may go to Indonesia and bow to more Muslims.

I won the Wimbledon mixed doubles title in 1980.