"Words have the power to both destroy and heal. When words are both true and kind, they can change our world." - The Buddha
"I cannot live without books" - Thomas Jefferson
"Banking establishments are more dangerous than standing armies." - Thomas Jefferson
"What gunpowder did for war, the printing press has done for the mind." - Wendell Phillips
"Chemistry means the difference between poverty and starvation and the abundant life." - Robert Brent
"We will make electricity so cheap that only the rich will burn candles." - Thomas Edison
"For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return." - Leonardo Da Vinci
If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the Mighty One... I am become Death, the Shatterer of Worlds. - J. Robert Oppenheimer, quoting "The Bhagavad Gita"
And the best for last:
"The future will be better tomorrow." - Dan Quayle
Hopefully this is interesting.
Oh, and just so you know, these may not be exact quotes, as I copied them from Civ 4.