I know, indeed, of nothing more subtly satisfying and cheering than a knowledge of the real good will and appreciation of others. Such happiness does not come with money, nor does it flow from a fine physical state. It cannot be brought. But it is the keenest joy, after all, and the toiler’s truest and best reward.

William Dean Howells (1837–1920) American author, literary critic, and playwright

Interview with Orison Swett Marden, Success Magazine
    (Source)

Quoted in Marden, How They Succeeded: Life Stories of Successful Men Told by Themselves, ch. 11 (1901).