Who said "To see if a thing can be done is already half of the doing."?

This quote is attributed to Carl Sandburg.

To see if a thing can be done is already half of the doing. - Carl Sandburg

"To see if a thing can be done is already half of the doing."

Carl Sandburg Success

Poet American 1878–1967

"I am the people—the mob—the crowd—the mass."

"Life is like an onion; you peel off one layer at a time and sometimes you weep."

"Nothing happens unless first we dream."

"I have always been ahead of my time."

"Success comes to those who never give up."

"Success is measured by happiness, not money."

"You make your own luck in this world."

"You have to be organized to be successful in anything."