The word philosophy sounds high-minded but it simply means the love of wisdom. If you love something you don't just read about it you hug it you mess with it you play with it you argue with it.
They would need to be already wise in order to love wisdom.
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It seems to me that in every culture I come across a chapter headed 'Wisdom.' And then I know exactly what is going to follow: 'Vanity of vanities all is vanity.'