the appetite for thinking must be regulated, as all sensible people know, for it may stifle one's life.
Susan SontagAl forms of consensus about ''great'' books and ''perennial'' problems, once stabilized, tend to deteriorate eventually into something philistine. The real life of the mind is always at the frontiers of ''what is already known.'' Those great books don't only need custodians and transmitters. To stay alive, they also need adversaries. The most interesting ideas are heresies.
Susan Sontag