Who said "A man is limited only by his imagination and will."?

This quote is attributed to Jack London.

A man is limited only by his imagination and will. - Jack London

"A man is limited only by his imagination and will."

Jack London Imagination

Novelist American 1876–1916

"The proper function of man is to live, not to exist."

"I would rather be ashes than dust."

"You can't wait for inspiration. You have to go after it with a club."

"The wise man doesn't give the right answers, he possesses the right questions."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."