The heretic is always better dead. And mortal eyes cannot distinguish the saint from the heretic.

Assassination is the extreme form of censorship; and it seems hard to justify an incitement to it on anti-censorial principles.

When a man teaches something he does not know to somebody else who has no aptitude for it, and gives him a certificate of proficiency, the latter has completed the education of a gentleman.

Man gives every reason for his conduct save one, every excuse for his crimes save one, every plea for his safety save one; and that one is his cowardice

Never repeat old grievances.

Get out of my way; for I won't stop for you.

When you want to put something into your part that is not in the play, you must ask the author-or some other author-to lead up to the interpolation for you. Never forget that the effect of a line may depend not on its delivery, but on something said earlier in the play, either by somebody else or by yourself, and that if you change it, it may be necessary to change the whole first act as well.