It is sufficiently humiliating to our nature to reflect that our knowledge is but as she rivulet, our ignorance as the sea. On points of the highest interest, the moment we quit the light of revelation we shall find that Platonism itself is intimately connected with Pyrrhonism, and the deepest inquiry with the darkest doubt.

Happiness ... leads none of us by the same route.

Genius, in one respect, is like gold; numbers of persons are constantly writing about both, who have neither.

Metaphysicians have been learning their lessons for the last four thousand years, and it is high time that they should now begin to teach us something. Can any of the tribe inform us why all the operations of the mind are carried on with undiminished strength and activity in dreams, except the judgment, which alone is suspended and dormant?

Some frauds succeed from the apparent candor, the open confidence, and the full blaze of ingenuousness that is thrown around them. The slightest mystery would excite suspicion and ruin all. Such stratagems may be compared to the stars; they are discoverable by darkness and hidden only by light.

We should choose our books as we would our companions, for their sterling and intrinsic merit.

It is far better to borrow experience than to buy it.