Bodily strength is wanting to old age; but neither is bodily strength demanded from old men.
 Marcus Tullius Cicero, On Friendship (44 BC). copy citation

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Author Marcus Tullius Cicero
Source On Friendship
Topic strength age
Date 44 BC
Language English
Reference
Note Translated by E. S. Shuckburgh
Weblink http://www.gutenberg.org/files/2808/2808-h/2808-h.htm

Context

“His body is absolutely free from unhealthy humours, and so he still performs all the duties and functions of a king. Active exercise, therefore, and temperance can preserve some part of one's former strength even in old age. 11. Bodily strength is wanting to old age; but neither is bodily strength demanded from old men. Therefore, both by law and custom, men of my time of life are exempt from those duties which cannot be supported without bodily strength. Accordingly not only are we not forced to do what we cannot do;” source