The spirit is weakened by surroundings that are too pleasant, and without a doubt one’s place of residence can contribute towards impairing its vigour. Animals whose hoofs are hardened on rough ground can travel any road; but when they are fattened on soft marshy meadows their hoofs are soon worn out. The bravest soldier comes from rock-ribbed regions; but the town-bred and the home-bred are sluggish in action. The hand which turns from the plough to the sword never objects to toil; but your sleek and well-dressed dandy quails at the first cloud of dust. Being trained in a rugged country strengthens the character and fits it for great undertakings.
— Seneca, Stoic philosopher