Bertrand Russell on getting old

“Psychologically there are two dangers to be guarded against in old age. One of these is absorption in the past. It does not do to live in memories, in regret for the good old days, or sadness about friends who are dead. One’s thoughts must be directed to the future, and to things about which there is something to be done”. (Bertrand Russell, “How to Grow Old”, 1975)