If there is such a thing as a good marriage, it is because it resembles friendship rather than love.

There is not much less vexation in the government of a private family than in the managing of an entire state.

It is good to rub and polish our brain against that of others.

We can be knowledgable with other men's knowledge but we cannot be wise with other men's wisdom.

There is no desire more natural than the desire for knowledge.