He no longer cared whether he understood human nature or not; he understood quite as much as he wanted; but he found in the Life of Gladstone (II. 464) a remark several times repeated that gave him matter for curious thought. "I always hold," said Mr. Gladstone, "that politicians are the men whom, as a rule, it is most difficult to comprehend;" and he added, by way of strengthening it— "For my own part, I never have thus understood, or thought I understood, above one or two,"

The Education of Henry Adams (1907)