Who said "Progress depends not on luck but on steady application."?

This quote is attributed to Alfred Marshall.

Progress depends not on luck but on steady application. - Alfred Marshall

"Progress depends not on luck but on steady application."

Alfred Marshall Perseverance

Economist Mathematician British 1842–1924

"Economics is the study of mankind in the ordinary business of life."

"The scope of economics is much wider than is commonly supposed."

"Human nature is the most wonderful and the most complex of all phenomena."

"The steadiest progress in the solution of a difficult problem comes from steady work."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."