Michel de Montaigne

“ And Philopaemen, to those who extolled King Ptolemy for every
day inuring his person to the exercise of arms: "It is not," said he,
"commendable in a king of his age to exercise himself in these things; he
ought now really to employ them." The young are to make their
preparations, the old to enjoy them, say the sages: and the greatest vice
they observe in us is that our desires incessantly grow young again; we
are always re-beginning to live.
Our studies and desires should sometime be sensible of age ”

“ Immemor, struis domos."
["You against the time of death have marble cut for use, and,
forgetful of the tomb, build houses."—Horace, Od., ii. 18, 17.]
The longest of my designs is not of above a year's extent; I think of
nothing now but ending; rid myself of all new hopes and enterprises ”