The chief evil with relation to the body is love for the body and pitying it. This takes away all the soul's authority over the body and makes the soul the slave of the body. And on the contrary, one who does not spare the body will not be disturbed in whatever he does by apprehensions born of blind love of life. How fortunate is one who is trained to this from childhood!

Raising Them Right: A Saint's Advice on Raising Children (ed. 1989)