Shakespeare
If it were done when 'tis done, then 'twer well If it were done quickly. If th' assassination Could trammel up the consequence and catch With his surcease success--that but this blow Might be the be-all and the end-all!--here, But here, upon this bank and shoal of time, We'd jump the life to come. But in these cases We still have judgement here, that we but teach Bloody instructions, which, being taught, return To plague th' inventor. This evenhanded justice Commends the ingredience of our poisoned chalice To our own lips... -- Macbeth-Act 1 Scene 7
All pity choked with custom of fell deeds And Caesar's spirit ranging, for revenge, With Ate by his side, come hot from hell, Shall in this confines with a monarch's voice Cry havoc, and let slip the dogs of war... -- Antony Act III, Scene 1 _Julius Caesar_
Oh that this too too sullied flesh would melt, thaw, and resolve itself into a dew, or that the everlasting had not fixed his cannons against self-slaughter. Oh God, God, how weary stale flat and unprofitable seems to me all the uses of this world. Fie on it! Ah, Fie! Tis an unweeded garden that grows to seed things rank and gross in nature posses it merely. That it should come to this! -- Hamlet
To be or not to be, that is the question. Whether tis nobler in the mind to suffer the slings and arrows of outrageous fortune, or by opposing, end them. -- Hamlet