There are no rules for friendship. It must be left to itself. We cannot force it any more than love.

The seat of knowledge is in the head; of wisdom, in the heart. We are sure to judge wrong, if we do not feel right.

To think justly, we must understand what others mean. To know the value of our thoughts, we must try their effect on other minds.

Those who are pleased with the fewest things know the least, as those who are pleased with everything know nothing.

We are not satisfied to be right, unless we can prove others to be quite wrong.

Mankind are a herd of knaves and fools. It is necessary to join the crowd, or get out of their way, in order not to be trampled to death by them.

The more we do, the more we can do; the more busy we are, the more leisure we have.