Ladies who play with fire must remember that smoke gets in their eyes.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

Sell your cleverness and buy bewilderment.

Animals, whom we have made our slaves, we do not like to consider our equal.

An intellectual is a man who doesn't know how to park a bike.

You just have to keep on doing what you do. It's the lesson I get from my husband; he just says, Keep going. Start by starting.

I sound my barbaric yawp over the rooftops of the world.

Liberty, according to my metaphysics is a self-determining power in an intellectual agent. It implies thought and choice and power.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.

The traditional ways were wrongly disowned by Christianity - in hindsight, medicine men were not demons but very important counsellors in the community.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

Only those with no memory insist on their originality.

The poor are prevented from thinking by the discipline of others, the rich by their own.

We must find time to stop and thank the people who make a difference in our lives

Circumstances do not make the man, they reveal him.

The people I distrust most are those who want to improve our lives but have only one course of action.

Patriotism is the last refuge of a scoundrel.

Some newspapers are fit only to line the bottom of bird cages.

The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic

Wisely, and slow. They stumble that run fast.

A designer is an emerging synthesis of artist, inventor, mechanic, objective economist and evolutionary strategist.