The first president to be described as left-handed was Herbert Hoover,[6][dubious – discuss] though this has been disputed.[3] There is no evidence of any left-handed president before Hoover, although it was said about President James Garfield that he could simultaneously write Latin with his right hand and Greek with his left.[4] Gerald Ford described himself as "left-handed sitting down and right-handed standing up".[7] Being forced by his schoolteachers and parents to switch handedness was the case with Harry Truman, according to the biographer David McCullough.[8]