“The Loneliest President,” the cover story in this week’s magazine, keeps resonating with us. Earlier, we wondered aloud whether Bush’s near-delusional state had something to do with the departures of his two pastry chefs. Now we discover that a new memoir, White House Chef , from former head cook Walter Scheib, who was fired by the Bushes in early 2005, supports John Heilemann’s suggestion that W. is an emotionally stunted, narcissistic personality incapable of empathy or growth.