Between knowledge of what really exists and ignorance of what does not exist lies the domain of opinion. It is more obscure than knowledge, but clearer than ignorance.

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.

Some people take pleasure in regaling one and all with details of their poor health. They are happy to give an organ recital to anyone who will listen.

I took a lot of things for granted - especially how I treated my body.

The Golden Rule of Habit Change: You can't extinguish a bad habit, you can only change it.

The important thing is the educational experience itself — how to survive it.

It takes a man of genius to travel in his own country, in his native village; to make any progress between his door and his gate.

Smiles from reason flow, To brute deny'd, and are of love the food.

I find it very difficult to wear nice, pretty shoes. I'm much more comfortable in boots or Birkenstocks or loafers.

I realise that stress is only fear. I now release all fears

Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

True justice is to pay one time for every mistake we make.