Ancient rshis were clear and convinced that no good results would follow if education was begun late in life. <blockquote>नाति षोडशमुपनयीत प्रसृष्टवृषणो ह्येष वृषलीभूतो भवतीति। (Jaim. Grhy. Sutr. 1.12)<ref>Jaiminiya [https://sa.wikisource.org/wiki/%E0%A4%9C%E0%A5%88%E0%A4%AE%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%97%E0%A5%83%E0%A4%B9%E0%A5%8D%E0%A4%AF%E0%A4%B8%E0%A5%82%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A5%8D Grhyasutras] </ref></blockquote>
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Ancient rshis were clear and convinced that no good results would follow if education was begun late in life. <blockquote>नाति षोडशमुपनयीत प्रसृष्टवृषणो ह्येष वृषलीभूतो भवतीति। (Jaim. Grhy. Sutr. 1.12)<ref name=":1">Jaiminiya [https://sa.wikisource.org/wiki/%E0%A4%9C%E0%A5%88%E0%A4%AE%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%97%E0%A5%83%E0%A4%B9%E0%A5%8D%E0%A4%AF%E0%A4%B8%E0%A5%82%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A5%8D Grhyasutras] </ref></blockquote>A boy who begins his education at 16 years of age is not likely to bring any credit to his teachers.
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During childhood, as proved by modern sciences also, mind is pliable, memory is keen and intellect is receptive; the foundational habits of a child can be moulded to form good habits which will remain with him for the rest of his life. [[Upanayana (उपनयनम्)|Upanayana]] samskara at the right age was laid down by in starting from Dharmasutra texts summarized for the present day in the Nibandhanas like Dharmasindhu etc. <blockquote>सप्तमे ब्राह्मणमुपनयीत पञ्चमे ब्रह्मवर्चसकामं नवमे त्वायुष्काममेकादशे क्षत्रियं द्वादशे वैश्यं... (Jaim. Grhy. Sutr. 1.12)<ref name=":1" /></blockquote>