Jeremy Bentham,
An Introduction to the Principles of Morals and Legislation…
(1780)
“ Hardiness, even in the sense in which it is opposed to the action of mechanical causes, is distinguishable from strength. The external indications of strength are the abundance and firmness of no the muscular fibres: those of hardiness, in this sense, are the firmness of the muscular fibres, and the callosity of the skin. Strength is more peculiarly the gift of nature: hardiness, of education. Of two persons who have had, the one the education of a gentleman, the other, that of a common sailor, the first may be the stronger, at the same time that the other is the hardier. ”
