“Be yourself. Everyone else is already taken.” ~ Oscar Wilde (October 16, 1854 to November 30, 1900)
Oscar Wilde was an Irish author, dramatist, and poet. He is famous for his plays and his epigrams (such as the one above).
[Source: GabrielaKortsch tweet on Twitter. Quotation verified through use of ThinkExist.com, accessed October 24, 2010. Dates and biographical information from Wikipedia, accessed October 24, 2010.]