A broad consensus exists that Lincoln was more eloquent than Davis in expressing war aims, more successful in communicating with the people, more skillful as a political leader in keeping factions working together for the war effort, better able to endure criticism and work with his critics to achieve a common goal. Lincoln was flexible, pragmatic, with a sense of humor to smooth relationships and help him survive the stress of his job; Davis was austere, rigid, humorless, with the type of personality that readily made enemies. Lincoln had a strong physical constitution; Davis suffered ill health and was frequently prostrated with illness. Lincoln picked good administrative subordinates (with some exceptions) and knew how to delegate authority to them; Davis went through five secretaries of war in four years; he spent a great deal of time and energy on petty administrative details that he should have left to subordinates. A disputatious man, Davis sometimes seemed to prefer winning an argument to winning the war; Lincoln was happy to lose an argument if it would help him win the war.