A slightly older boy or girl remains always a very effective stimulus to ambition, and, if kind, can explain difficulties better than an adult, from the recent recollection of overcoming them. Even at the university I learnt much from people a few years senior to me which I could not have learnt from grave and reverend signors.
Source: On Education, especially in early childhood, 1926, Pt. 2： Education of character, r, chap. 10: Importance of Other Children
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