Truths are known to us in two ways: some are known directly, and of themselves; some through the medium of other truths. The former are the subject of Intuition, or Consciousness; the latter, of Inference; the latter of Inference. The truths known by Intuition are the original premisses, from which all others are inferred.

The principle itself of dogmatic religion, dogmatic morality, dogmatic philosophy, is what requires to be booted out; not any particular manifestation of that principle.

But these few are the salt of the earth; without them, human life would become a stagnant pool. Not only is it they who introduce good things which did not before exist, it is they who keep the life in those which already existed.

All free communities have both been more exempt from social injustice and crime, and have attained more brilliant prosperity, than any others, or than they themselves after they have lost their freedom.

Eloquence is heard; poetry is overheard ... All poetry is of the nature of the soliloquy.

There is the greatest difference between presuming an opinion to be true, because, with every opportunity for contesting it, it has not been refuted, and assuming its truth for the purpose of not permitting its refutation.

Money is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.