Question

Hence, it seems to me, the first business of the day should be to put the mind through its paces. You look after your body, inside and out; you run grave danger in hacking hairs off your skin; you employ a whole army of individuals, from the milkman to the pig-killer, to enable you to bribe your stomach into decent behaviour. Why not devote a little attention to the far more delicate machinery of the mind, especially as you will require no extraneous aid? It is for this portion of the art and craft of living that I have reserved the time from the moment of quitting your door to the moment of arriving at your office.

The author’s main purpose is to convince readers to

devote less time to worrying about what to eat.
resist working too much in favor of taking up the arts.
avoid endangering themselves just so they can look better.
spend as much time developing the mind as developing the body.

Answer 1

spend as much time developing the mind as developing the body.

The passage contrasts the effort people put into bodily care (grooming, feeding) with the neglect of “the far more delicate machinery of the mind,” and urges reserving time each morning to exercise the mind.