Because we humans are big and clever enough to produce and utilize antibiotics and disinfectants, it is easy to convince ourselves that we have banished bacteria to the fringes of existence. Don't you believe it. Bacteria may not build cities or have interesting social lives, but they will be here when the Sun explodes. This is their planet, and we are on it only because they allow us to be.
Mr. [Aldous] Huxley has been the alarming young man for a long time, a sort of perpetual clever nephew who can be relied on to flutter the lunch party. Whatever will he say next? How does he think of those things? He has been deplored once or twice, but feeling is in his favor: he is steadily read. He is at once the truly clever person and the stupid person's idea of the clever person; he is expected to be relentless, to administer intellectual shocks.