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Strive, while improving your one talent, to enrich your whole capital as a man. It is in this way that you escape from the wretched narrow-mindedness which is the characteristic of every one who cultivates his specialty alone.

Strive, while improving your one talent, to enrich your whole capital as a man. It is in this way that you escape from the wretched narrow-mindedness which is the characteristic of every one who cultivates his specialty