There seems to be a close relationship between drinks and one's life. The adolescent(少年)usually loves soft drinks for their sweetness and variety. He knows nothing of sadness and his taste of life is sweetness to the exclusion of all the others. In his eyes, the world is full of facets just as soft drinks are varied in flavor. Youth sees him on a job or in love. Now, soft drinks will have to give way to coffee, which is bitter yet somewhat sweet and fragrant. It gives a stimulating sensation suggestive of maturity, appealing to him, as he is fickle and moody. At his stage, he begins his career full of ambition and ideals, on the other hand he also needs and aspires after a home of his own. However, either his work or his love affairs may bring small setbacks, for which he is sometimes seen forcing a tearful smile and sometimes smiling through his tears. Considerations of gains and losses seem to him an enjoyment as well as a torture. Middle age turns him to Chinese tea that gives a delicate fragrance very gradual to come out, only discernable off and on. It is bland an elegant, deep and profound. It never stimulates your sense of taste but a lip of it will leave a faint fragrance lingering in your mouth, Free from impractical longings and fully aware of the evanescent of the sunset, he cherishes every minute of the day and each day of his is sweetened with a simple but real happiness. The elderly drinks plain boiled water which is devoid of saccharin, caffeine or theophyline (茶碱). It tastes insipid yet a slow sipping will doubtless yield a wee bit of sweetness. He has been tossed in life's storms and taught by rough and bitter experience to know better than to care about glories and successes which appear to him now as transient as a fleeting cloud. For this is the time he can sit comfortable in an armchair letting his mind wander. All that happened in the past and all that exist in the world seem to him as plain and insipd as water... The passage could be entitled ______.