Being as I'm reading Faranheit 451 right now, I like this one:

''I don't talk [i]things[/i], sir,'said Faber. 'I talk the [i]meaning[/i] of things. I sit here and [i]know[/i] I'm alive.''

These are some of my other favourites:

'Just as there is room in the sky for a thunderstorm, so there is room in the vast space of our mind for a few painful feelings; and just as a storm has no power to destroy the sky, so unpleasant feelings have no power to destroy our mind.'
- Geshe Kelsang Gyatso

'I know that human happiness never remains long in the same place.'
- Herodotus of Halicarnassus, [i]The Histories[/i]

'Under Colonel Korn's rule, the only people permitted to ask questions were those who never did. Soon the only people attending were those who never asked questions, and the sessions were discontinued altogether, since Clevinger, the corporal and Colonel Korn agreed that it was neither possible nor necessary to educate people who never questioned anything.'
- Joseph Heller, [i]Catch 22[/i]