And what, Socrates, is the food of the soul? Surely, I said, knowledge is the food of the soul.

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.

I can calculate the motion of heavenly bodies but not the madness of people.

The good characters in my book are loosely based on folks I know. All the bad stuff is made up.

Believe in yourself and have faith in your abilities.

If they laugh at you for being true to yourself, laugh back at them for not knowing how great it feels to be in love with one's positive self.

The mathematics of quantum mechanics very accurately describes how our universe works. And it tells us our reality is continually branching into different possibilities, just like a coral.

Anyone ever lost in the wild knows that nature wants you dead.

Where I have problems is when I am in the midst of doing something that I am completely focused on, and then I am asked to buy shoes or something.

I wanted out of my record deal with EMI. They wanted me to record one type of album; I wanted to record the type of music I wanted to make.

Sometimes humour is all we have to say the things that can't be said.

Actually I'd had a certain amount of experience in Europe in the inter-war period, as a banker, and I was also a member of the Board of Directors of the International Chamber of Commerce.