One of the several online quotation sources is Wikiquote. Besides being fun to read, famous quotations are endlessly useful to trial lawyers, whether personal injury lawyers or others. Here’s a description from Wikiquote:
Welcome to Wikiquote, a free online compendium of quotations from notable people and creative works in every language, including sources (where known), translations of non-English quotes, and links to Wikipedia for further information! The English version of Wikiquote has 13,380 pages so far with many thousands of quotations and proverbs.