Bartlett's Familiar Quotations - Passages, phrases and proverbs traced to their sources; chronological index of primary authors.
Quote of the Week - A collection of the best and most entertaining and relevant quotes.
Quoteland.com - Find quotations on anything; identify quotations by anyone.
The Quotes, Sayings and Poetry Database - This site contains quotes and more quotes that will enrich and enliven your life; also featured are books, poetry, and essays.