For those of you who didn't know (like myself), this quote, as read by Drake in the new Uncharted 3 trailer, is from T.E. Lawrence aka Lawrence of Arabia. --- Have to make myself remember it's something that I used to know
"All men dream: but not equally. Those who dream by night int he dusty recesses of their minds wake int he day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act their dream with open eyes, to make it possible. This I did." - Pg 24 of the Introductory Chapter of T.E. Lawrence's The Seven Pillars of Wisdom, Published by Anchor Books, a division of Random House Inc., New York, 1991.
Too specific? XD
Just happened to be reading the Seven Pillars for a history class, so you're in luck.