Who said "Who has gone farthest? Who is willing to try?"?

This quote is attributed to Walt Whitman.

Who has gone farthest? Who is willing to try? - Walt Whitman

"Who has gone farthest? Who is willing to try?"

Walt Whitman Adventure

Poet American 1819–1892

"Do I contradict myself? Very well then I contradict myself, (I am large, I contain multitudes.)"

"I celebrate myself, and sing myself."

"Keep your face always toward the sunshine, and shadows will fall behind you."

"The future is no more uncertain than the present."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."