We do not act because we know, but we know because we are called upon to act; the practical reason is the root of all reason.

By mere burial man arrives not at bliss; and in the future life, throughout its whole infinite range, they will seek for happiness as vainly as they sought it here, who seek it in aught else than that which so closely surrounds them here - the Infinite

My mind can take no hold on the present world, nor rest in it a moment, but my whole nature rushes onward with irresistible force towards a future and better state of being.

A man can do what he ought to do; and when he says he cannot, it is because he will not.

Here below is not the land of happiness: I know it now; it is only the land of toil, and every joy which comes to us is only to strengthen us for some greater labor that is to succeed.

The person who doubts there is an external world does not need proof: he needs a cure.

What sort of philosophy one chooses depends, therefore, on what sort of man one is; for a philosophical system is not a dead piece of furniture that we can reject or accept as we wish; it is rather a thing animated by the soul of the person who holds it.