The fake MLK quotes annoy me. They're good sentiments; why did whoever first posted them feel the need to lie and tack on a name to them? Let the sentiments stand on their own.
We shouldn't celebrate anyone's death. (Yes, this is coming from the guy that posted the flag gifs.) When a burglar breaks into your house and you end up shooting him to protect your family, you weren't in the wrong for killing in self-defense -- you definitely did right by your family -- but that doesn't mean you throw a party. At best, killing Bin Laden was like pooping -- it was necessary and good and essential, but not very pretty.
And especially from a Christian perspective. Bin Laden was evil and deserving of eternity in hell. And so am I. In and of myself, I'm infinitely more like Bin Laden than I am like God, and Bin Laden was just as deserving of salvation as me -- i.e., not at all. Yes, the world will probably be a better place without him, but someone still died without knowing Christ, and that should at least give us pause.
(See also: Ezekiel 33 ("Tell them, 'As sure as I am the living God, I take no pleasure from the death of the wicked. I want the wicked to change their ways and live. Turn your life around! Reverse your evil ways! Why die, Israel?'"), Ezekiel 18 ("Do you think I take any pleasure in the death of wicked men and women? Isn't it my pleasure that they turn around, no longer living wrong but living right—really living?"), Proverbs 24:17-18 ("Don't laugh when your enemy falls; don't crow over his collapse. God might see, and become very provoked, and then take pity on his plight."), and the book of Jonah.)
Now quotes:
One I've quoted here several times before: “Critics who treat "adult" as a term of approval, instead of as a merely descriptive term, cannot be adults themselves. To be concerned about being grown up, to admire the grown up because it is grown up, to blush at the suspicion of being childish; these things are the marks of childhood and adolescence....When I was ten, I read fairytales in secret and would have been ashamed if I had been found doing so. Now that I am fifty I read them openly. When I became a man, I put away childish things, including the fear of childishness and the desire to be very grown up.” — C.S. Lewis
One that I think I might've had as a sig at some point: “If there is anything the nonconformist hates worse than a conformist, it’s another nonconformist who doesn’t conform to the prevailing standard of nonconformity.” —Bill Vaughan
I don't actually know who Bill Vaughan is, but it's a good quote and apparently he's the guy that said it.
“For after all what is man in nature? A nothing in relation to infinity, all in relation to nothing, a central point between nothing and all and infinitely far from understanding either. The ends of things and their beginnings are impregnably concealed from him in an impenetrable secret. He is equally incapable of seeing the nothingness out of which he was drawn and the infinite in which he is engulfed.” — Blaise Pascal
And a classic: “Cats are interesting, they're like girls… if they come and talk to you, it's great! But if you go and talk to them, it might not go so well.” — Shigeru Miyamoto