The unexamined life is not worth living for a human being.

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.

Conduct yourself in a manner that is worthy of respect and don't worry about what others think.

Fate already warned us to pack it in. We just didn’t hear it in time.

Historical revisionists find what they set out to find.

Whenever I write a story, I hope it appeals to both boys and girls.

So much one man can do that does both act and know.

The beginning of philosophy is the recognition of the conflict between opinions.

Patience lightens the burthen we cannot avert.

I feel guilty about spending so much time away from home and loved ones.

I hate vacations. If you can build buildings, why sit on the beach?