Not art and science only, but patience will be required for the work.

Lose the day loitering, 'twill be the same story To-morrow, and the next more dilatory, For indecision brings its own delays, And days are lost lamenting o'er lost days. Are you in earnest? Seize this very minute! What you can do, or think you can, begin it! Only engage, and then the mind grows heated; Begin it, and the work will be completed.

The artist may be well advised to keep his work to himself till it is completed, because no one can readily help him or advise him with it... but the scientist is wiser not to withhold a single finding or a single conjecture from publicity.

The true, prescriptive artist strives after artistic truth; the lawless artist, following blind instinct, after an appearance of naturalness. The one leads to the highest peaks of art, the other to its lowest depths.

I have so much in me, and the feeling for her absorbs it all; I have so much, and without her it all comes to nothing.

Shakespeare is dangerous to young poets; they cannot but reproduce him, while they fancy that they produce themselves.

The misfortune in the state is, that nobody can enjoy life in peace, but that everybody must govern; and in art, that nobody will enjoy what has been produced, but that every one wants to reproduce on his own account.