Homo sum; nihil humani a me alienum puto , said the Latin playwright. And I would rather say, Nullum hominem a me alienum puto : I am a man; no other man do I deem a stranger. For to me the adjective humanus is no less suspect than its abstract substantive humanitas , humanity. Neither "the human" nor "humanity," neither the simple adjective nor the substantivized adjective, but the concrete subst...