The world is divided into men who have wit and no ...

Therefore in medicine we ought to know the causes of sickness and health.

The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.

Now it is established in the sciences that no knowledge is acquired save through the study of its causes and beginnings, if it has had causes and beginnings nor completed except by knowledge of its accidents and accompanying essentials.

As I grow older, I pay less attention to what men say. I just watch what they do.

Men of age object too much, consult too long, adventure too little, repent too soon, and seldom drive business home to the full period, but content themselves with a mediocrity of success.

Men are like wine - some turn to vinegar, but the best improve with age.

I suppose when they reach a certain age some men are afraid to grow up. It seems the older the men get, the younger their new wives get.

Every formula of every religion has in this age of reason, to submit to the acid test of reason and universal assent.

Instead of being presented with stereotypes by age, sex, color, class, or religion, children must have the opportunity to learn that within each range, some people are loathsome and some are delightful.

It is possible that mankind is on the threshold of a golden age but, if so, it will be necessary first to slay the dragon that guards the door, and this dragon is religion.

The one thing that unites all human beings, regardless of age, gender, religion or ethnic background, is that we all believe we are above-average drivers.