Really this has to be one of the most touching and better "Twilight Zone" episodes in series history. Donald Pleasence who's such a legend and acting veteran stars as an old college professor, who's becoming angry with his male students at an all boys school. He sees the desire to learn just isn't present, and to make matters worse he finds out that the institution wants him to retire or be fired. So the depression sets in and the worry is starting that no students future will develop into a successful life because he now considers his teaching a failure. Yet that's why you enter the "Twilight Zone"! as his bright mind sees into the future and all of his students have became great success stories! Ending on a happy note, proving that all of us have been touched by knowledge at some point and we always will remember at least one teacher, and take something from them and remember it and use it as knowledge. Great episode that's touching and brings out your emotions.