OF HEROISM Every rational person, growing up, had his favorite childhood heroes. Maybe it was a John Wayne character in a Western action movie, leading the cavalry over the hill in a last charge against vicious bandits or marauding Indians. Maybe it was a swashbuckling swordsman who, ever loyal to his King, saves the Queen from a nefarious plot, like d'Artagnan in Alexandre Dumas's The Three Musketeers. Maybe, as one grew older, one's taste ran to more intellectual heroes, such as an uncompromising young architect who stands by his own judgme ....