Quotation:

 Berthold Auerbach quotes (German novelist, 1812-1882)

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 E. Y. Harburg quotes (American Lyricist, Librettist and Song Writer, 1896-1981)

 Plato quotes (Ancient Greek Philosopher He was the world's most influential philosopher. 428 BC-348 BC)

 Confucius quotes (China's most famous teacher, philosopher, and political theorist, 551-479 BC)

 Ralph Waldo Emerson quotes (American Poet, Lecturer and Essayist, 1803-1882)

 Victor Hugo quotes (French romantic Poet, Novelist and Dramatist, 1802-1885)

 Sidonie Gabrielle quotes

 Plato quotes (Ancient Greek Philosopher He was the world's most influential philosopher. 428 BC-348 BC)

 Friedrich Nietzsche quotes (German classical Scholar, Philosopher and Critic of culture, 1844-1900.)

 Edgar Watson Howe quotes (American Editor, Novelist and Essayist, He was known as the Sage of Potato Hill, 1853-1937)