All men are equally liable to pain and disease and sickness
 David Hume, An Enquiry Concerning the Principles of Morals (1751). copy citation

Context

“There is no rule in painting or statuary more indispensible than that of balancing the figures, and placing them with the greatest exactness on their proper centre of gravity. A figure, which is not justly balanced, is ugly; because it conveys the disagreeable ideas of fall, harm, and pain. [Footenote: All men are equally liable to pain and disease and sickness; and may again recover health and ease. These circumstances, as they make no distinction between one man and another, are no source of pride or humility, regard or contempt. But comparing our own species to superior ones, it is a very mortifying consideration, that we should all be so liable to diseases and infirmities;” source