The very next afternoon three young boys, full of youthful, after-school enthusiasm, came down his street, beating merrily on every trash can they encountered.

All that I want is just an opportunity; you will see a young man with all his energy and spirit in working.

The great scientists are often men of supernormal vitality which enables them to retain a freshness of outlook and enterprise even into their old age.

Meanwhile a young man came down the road. Vigorous and healthy, he was singing a song and looking this way and that.

But he has the energy and attitude of a much younger man, and seems to absorb energy from his audience.