I found this famous essay by Samuel Ullman,YOUTH, of which I read many, many years ago.  The essay is beatifully written, and its translation is not bad either: inspirational, encouraging, and suitable for all ages.  If you are still a young student, I suggest you memorize it, and it will do you good all of your time.  If you are a senior like me, from now on, take it as your motto to live with for the rest of your life!   

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