A quote
I have just returned from a ride in my litter; and I am as weary as if I had walked the distance, instead of being seated. Even to be carried for any length of time is hard work, perhaps all the more so because it is an unnatural exercise; for Nature gave us legs with which to do our own walking, and eyes with which to do our own seeing. Our luxuries have condemned us to weakness; we have ceased to be able to do that which we have long declined to do.
Seneca·Letter 55 — On Vatia’s Villa (§1)·trans. Gummere