Talent is indispensable, although it is 'always' replaceable. Just remember the simple rules concerning talent: Identify It, Hire It, Nurture It, Reward It, Protect It. And when the time comes, Fire It.
I would fain coin wisdom,—mould it, I mean, into maxims, proverbs, sentences, that can easily be retained and transmitted. Would that I could denounce and banish from the language of men—as base money—the words by which they cheat and are cheated!