As there is less difference than we generally think between the happiness of men who seem to differ widely in fortune, so is there also less between their moral natures
 Samuel Butler, The Note-Books of Samuel Butler (1912). copy citation

Context

“absolute virtue is as sure to kill a man as absolute vice is, let alone the dullnesses of it and the pomposities of it. iii God does not intend people, and does not like people, to be too good. He likes them neither too good nor too bad, but a little too bad is more venial with him than a little too good. iv As there is less difference than we generally think between the happiness of men who seem to differ widely in fortune, so is there also less between their moral natures; the best are not so much better than the worst, nor the worst so much below the best as we suppose; and the bad are just as important an element in the general progress as the good, or perhaps more so.” source