There are multiple sites dedicated to quotes. You can find a list of some on Yahoo . My personal favorite site is Creative Quotations , which has quotes by author or keyword, as well as plenty of other quote related material. Or you can join a listserv that sends a quote to your email box each morning. The one I moderate is the Quote of the Day list, which is mainly inspirational quotes.
Quotations are wonderful things.
They can inspire you, make you mad, make you think, and generally spice up your life. My own personal list has grown from a handful to 51 pages. But I wouldn't give up a single one.