Continuous eloquence wearies.

Chess is the gymnasium of the mind.

We view things not only from different sides, but with different eyes; we have no wish to find them alike.

One-half of life is admitted by us to be passed in sleep, in which, however, it may appear otherwise, we have no perception of truth, and all our feelings are delusions; who knows but the other half of life, in which we think we are awake, is a sleep also, but in some respects different from the other, and from which we wake when we, as we call it, sleep. As a man dreams often that he is dreaming, crowding one dreamy delusion on another.

In each action we must look beyond the action at our past, present, and future state, and at others whom it affects, and see the relations of all those things. And then we shall be very cautious.

If we examine our thoughts, we shall find them always occupied with the past or the future.

The heart has its order, the mind has its own, which uses principles and demonstrations. The heart has a different one. We do not prove that we ought to be loved by setting out in order the causes of love; that would be absurd.