If you cry ''Forward'' you must be sure to make clear the direction in which to go. Don't you see that if you fail to do that and simply call out the word to a monk and a revolutionary, they will go in precisely opposite directions?

If there's a gun on the wall in act one, scene one, you must fire the gun by act three, scene two. If you fire a gun in act three, scene two, you must see the gun on the wall in act one, scene one.

Try to be original in your play and as clever as possible; but don't be afraid to show yourself foolish; we must have freedom of thinking, and only he is an emancipated thinker who is not afraid to write foolish things.

Be sure not to discuss your hero's state of mind. Make it clear from his actions.

In all the universe nothing remains permanent and unchanged but the spirit.

The thirst for powerful sensations takes the upper hand both over fear and over compassion for the grief of others.

...and with a burning pain in my heart I realized how unnecessary, how petty, and how deceptive all that had hindered us from loving was. I understood that when you love you must either, in your reasonings about that love, start from what is highest, from what is more important than happiness or unhappiness, sin or virtue in their accepted meaning, or you must not reason at all.