It gives a person though on how replaceable you can be, But how you can also impact peoples lives with out realizing it. You can see how much he cares for his students and wants them to be somebody in life. Then toward the end was shown that he did what he set out to do. How he gave many students what they needed to go forth in to the real world as a well rounded individual. He asked for little then to keep going at his job. It still relates to today and how we do to age or other thing can be replaced even if we make impacts in to lives and are still able to do our job. I love this episode do to its timelessness and how it can apply to today and even tomorrow. It is a wonderful episode one of the best.
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