Walk while ye have the light, lest darkness come upon you.

It is his restraint that is honorable to a person, not their liberty.

The purest and most thoughtful minds are those which love colour the most.

Though nature is constantly beautiful, she does not exhibit her highest powers of beauty constantly, for then they would satiate us and pall upon our senses. It is necessary to their appreciation that they should be rarely shown. Her finest touches are things which must be watched for; her most perfect passages of beauty are the most evanescent.

I believe that there is no test of greatness in periods, nations or men more sure than the development, among them or in them, of a noble grotesque, and no test of comparative smallness or limitation, of one kind or another, more sure than the absence of grotesque invention, or incapability of understanding it.

Man's only true happiness is to live in hope of something to be won by him.

Now the basest thought possible concerning man is, that he has no spiritual nature; and the foolishest misunderstanding of him possible is, that he has, or should have, no animal nature. For his nature is nobly animal, nobly spiritual,--coherently and irrevocably so; neither part of it may, but at its peril, expel, despise, or defy the other.