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

This quote is attributed to Pickering Edward.

Be yourself; everyone else is already taken. - Pickering Edward

"Be yourself; everyone else is already taken."

Pickering Edward

Astronomer American 1846–1919

"The greatest glory in living lies not in never falling, but in rising every time we fall."

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

"Love all, trust a few, do wrong to none."

"The only true wisdom is in knowing you know nothing."