Our subjective experience of time is highly variable. We all know that days can pass like weeks and months can feel like years and that the opposite can be just as true: A month or year can zoom by in what feels like no time at all.
Practical wisdom is only to be learned in the school of experience. Precepts and instruction are useful so far as they go but without the discipline of real life they remain of the nature of theory only.
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The experience gathered from books though often valuable is but the nature of learning whereas the experience gained from actual life is one of the nature of wisdom.