Taft was cheerful, friendly, a typical hail-fellow-well-met with an infectious chuckle. Always popular, he had many friends but, surprisingly, few intimates. "One of the astonishing things about Taft's four years in the White House," wrote biographer Henry F. Pringle, "was the almost total lack of men, related or otherwise, upon whom he could lean... For the most part he faced his troubles alone." He was not happy as President. The break with his predecessor and former mentor, Theodore Roosevelt, weighed heavily on his mind; he was often irritable, depressed, at least once in tears. He regained his good spirits in retirement and as chief justice.