Men fear thought as they fear nothing else on earth - more than ruin, more even than death.

Work is of two kinds: first, altering the position of matter at or near the earth's surface relative to other matter; second, telling other people to do so.

There is no greater reason for children to honour parents than for parents to honour children except, that while the children are young, the parents are stronger than children.

I am myself a dissenter from all known religions, and I hope that every kind of religious belief will die out.

We do not like to be robbed of an enemy; we want someone to hate when we suffer. It is so depressing to think that we suffer because we are fools; yet, taking mankind in the mass, that is the truth.

Every increase in knowledge requires an increase in wisdom

Beggars do not envy millionaires, though of course they will envy other beggars who are more successful.