Selected quotation
Time misspent in youth is sometimes all the freedom one ever has.
Anita Brookner, "The Misalliance"
Various books with quotations, aphorisms and proverbs:
Bartlett's Familiar Quotations: A Collection of Passages, Phrases, and Proverbs Traced to Their Sources in Ancient and Modern Literature (17th Edition)
8,789 Words of Wisdom
America's Popular Sayings: Over 1600 Expressions on Topics from Beauty to Money and Everything In Between
365 Inspirational Quotes (365 Days Perpetual Calendars)
The Yale Book of Quotations
The Wise and Witty Quote Book: More than 2000 Quotes to Enlighten, Encourage, and Enjoy
The Most Brilliant Thoughts of All Time (In Two Lines or Less)
101 French Proverbs
The Oxford Dictionary of Quotations
The Proverbs Driven Life: Timeless Wisdom for Your Words, Work, Wealth, and Relationships
Ancient Wisdom: The Book of Proverbs With Devotions for Today
Everyday Positive Thinking