The world is so full of wonderful things we should all, if we were taught how to appreciate it, be far richer than kings.

Scientists do not believe in fundamental and absolute certainties. For the scientist, certainty is never an end, but a search; not the ordering of certainty, but its exploration. For the scientist, certainty represents the highest degree of probability.

It is the mark of the cultured man that he is aware of the fact that equality is an ethical and not a biological principle

The evidence indicates that woman is, on the whole, biologically superior to man.

Children are the most learning-hungry beings in the world.

Today, while the titular head of the family may still be the father, everyone knows that he is little more than chairman, at most, of the entertainment committee.

It is the function of women to teach men how to be human.