"Who wants to know all grows old before his time." ~~ Yiddish Proverb
"A man is more concerned about the loss of his money than of his days; yet his money does not help and his days will never return." ~~ Ma’avar Yabok
"Who cries over the past is offering a vain prayer." ~~ Berakhot 9:3
"Old age, like poverty, although no disgrace, is not a great honor either. We all expect it and we all want to look young." ~~ Elhanan L. Levinsky
"Abandon me not when I grow old!" ~~ Psalms (Tehillim) 71:9
"As men age, their opinions change. " ~~ Talmud, Shabbat
"A sick man, when he recovers from an illness, returns to the days of his youth." ~~ Talmud, Nedarim
"When young I ate so that I could write; in old age I write so that I may eat." ~~ M. A. Ginsburg
"When I was young, I admired clever people. Now that I am old, I admire kind people. " ~~ Abraham Joshua Heschel
"When does a man begin to feel that old age seized him? When he suddenly sees a new generation that conquers the field of labor and does the work differently from his practice." ~~ Achad Ha’am
"Wine is as good to the old as milk is to babes." ~~ Yalkut Shimoni
"To learn from the young is to eat unripe fruit and drink new wine; to learn from the old is to eat ripe fruit and drink old wine." ~~ (based on) Sayings of the Fathers 4:28