Bartlett’s Quotations http://www.bartleby.com/100/

BrainyQuote http://brainyquote.com/

Dictionary of Quotations http://www.quotationreference.com/

House of Quotes http://www.houseofquotes.com/best_quotes.cfm

Quotations Archive http://www.aphids.com/quotes/index.shtml

Quoteworld http://www.quoteworld.org/

Simpson’s Contemporary Quotations http://www.bartleby.com/63/

The Quotations Database http://www.quotedb.com/

The Quotations Page http://www.quotationspage.com/

The Quote Garden http://www.quotegarden.com/