Nikolai Gogol said this quote

“ To what nadir of paltriness , pettiness, and squalor a man can sink! How could he change so! But is this really true to life? ---It is, it's all true to life, for anything can happen to a man. Your ardent youth of today would recoil in horror if you were to show him his own portrait as an old man. Once you set off on life's journey, once you take your leave of those gentle years of youth and enter the harsh, embittering years of manhood, remember to keep with you all your human emotions, do not leave them by the wayside, for you will not pick them up again! Grim and terrible is the old age which awaits us, and nothing does it give in return! The grave itself is more merciful than old age, for at least on the gravestone you will find written the words: 'Here a man lies buried!' but in the cold, unfeeling features of inhuman old age you can read nothing. ”