Great Men are not ambitious in that sense; he is a small poor man that is ambitious so.
 Thomas Carlyle, On Heroes, Hero-Worship, and The Heroic in History (1841). copy citation

Context

“not in the lump, as they are thrown down before us. But a second error, which I think the generality commit, refers to this same "ambition" itself. We exaggerate the ambition of Great Men; we mistake what the nature of it is. Great Men are not ambitious in that sense; he is a small poor man that is ambitious so. Examine the man who lives in misery because he does not shine above other men; who goes about producing himself, pruriently anxious about his gifts and claims; struggling to force everybody, as it were begging everybody for God's sake, to acknowledge him a great man, and set him over the heads of men!” source