Print resources are available in Pius Library.  A traditional source for quotations is Familiar Quotations by John Bartlett [Ref. PN 6081 .B27 1992].  The most recent edition is at the reference desk.   To search the Saint Louis Universtiy Libraries Catalog by subject for quotation books use Quotations and its subdivisions.  To find African American quotations, use Quotations--Afro American.  To find quotations from the Bible, use Quotations--Bible.

Bartleby.com:  Quotations
http://www.bartleby.com/quotations/
Search all three collections available or search each individually.  Titles available are the 9th edition, 1901, of Bartlett's Familiar Quotations; Columbia World of Quotations., 1996; and Simpson’s Contemporary Quotations, 1988, with quotations from 1950 to 1988.

Dictionary of Quotations
http://www.quotationreference.com/
The work of John A. Simone, Jr., this collection of quotations can be browsed by author or subject or searched by word or phrase.

Phrase Finder
http://www.phrases.org.uk/meanings/index.html
Search for a phrase related to a word you type in search box or browse an A-Z list with all entries.  Meaning and/or source are available for some phrases in the A-Z list.

Quotations
http://www.theotherpages.org/quote.html
Contains almost 19,000 quotations arranged in 30 collections such as Wisdom, Aphorisms, Poetry, Quotes by Women, etc.  Searching by word is not possible.  Maintained by Stephen L. Spanoudis.

A Short Dictionary of Scientific Quotations
http://naturalscience.com/dsqhome.html
From naturalScience, this site provides browsable quotes from famous scientists and others.  The source is given for each.