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What is the Alter Rebbe's question on the passuk:
חנוך לנער על פי דרכו?
What is the answer?
If you educate everyone according to his level, then this doesn't seem to be one true path. Why do we then expect everyone to stay on this path when they grow old.
Answer: The pasuk refers to Tzaddikim. As they grow older they get an אהבה רבה. But even so, there are times that they fall, and then they rely on their אהבה מהתבוננות that they were taught when they were younger.