Who said "Be yourself; everyone else is already taken"?

This quote is attributed to Hermann Muller.

Be yourself; everyone else is already taken - Hermann Muller

"Be yourself; everyone else is already taken"

Hermann Muller Life

Geneticist American 1890–1967

"Life is what happens when you're busy making other plans"

"The only way to do great work is to love what you do"

"In the middle of difficulty lies opportunity"

"The future belongs to those who believe in the beauty of their dreams"

"Life is meant to be lived with passion."

"Life is what happens when you're busy making other plans."

"Life is a journey, not a destination."

"Life's too short for regrets."