Selected quotation
"Every production of an artist should be the expression of an adventure of his soul."
~ William Somerset Maugham, "The Summing Up"
Various books with quotations, aphorisms and proverbs:
The Wise and Witty Quote Book: More than 2000 Quotes to Enlighten, Encourage, and Enjoy
The Yale Book of Quotations
8,789 Words of Wisdom
Everyday Positive Thinking
Chinese Proverbs
Doonesbury.com's The War in Quotes
Apronisms: Pocket Wisdom for Every Day
The Oxford Dictionary of Quotations
Positive Thinking Every Day: An Inspiration for Each Day of the Year
Bartlett's Familiar Quotations: A Collection of Passages, Phrases, and Proverbs Traced to Their Sources in Ancient and Modern Literature (17th Edition)
The Proverbs Driven Life: Timeless Wisdom for Your Words, Work, Wealth, and Relationships
Ancient Wisdom: The Book of Proverbs With Devotions for Today