"What toil and perseverance, in cultivating the bodily powers, must it require, to qualify the tumbler for those feats of activity, with which he astonishes mankind! [... ]Were we to take equal pains in the improvement of our intellectual and moral nature, which are surely not less susceptible of cultivation, who can tell to what heights of excellence, and of happiness, we might at length arise!
— Beattie, James (1735-1803)
(III, pp. 51-2)
Beattie, James. Dissertations Moral and Critical (London: Printed for Strahan, Cadell, and Creech, 1783). Facsimile-Reprint: Friedrich Frommann Verlag, Stuttgart-Bad Cannstatt, 1970. <Link to Google Books>