What's your favorite quote?

I'm in a printmaking cl and I'm making a t-shirt...I already drew my design out but I'm trying to think of some sort of quote I can put on there. Does anyone have a favorite quote? Some of my favorite authors are Sylvia Plath, Hunter S. Thompson, and Chuck Palahniuk. Some of my favorite bands are Brand New, Bright Eyes, The National, Radiohead, Frightened Rabbit, and Bon Iver, just to give you guys an idea. Even if the quotes aren't by any of those bands/authors, i'd still very much appreciate suggestions. Thank you!