It is not knowledge nor want of knowledge on the part of farmers that causes one to thrive while another is needy.

You won’t hear a story like this running about: The estate has gone to ruin because the sower sowed unevenly, or because he didn’t plant the rows straight, or because someone, not knowing the right soil for vines, planted them in barren ground, or because someone didn’t know that it is well to prepare the fallow for sowing, or because someone didn’t know that it is well to manure the land.

No, you are much more likely to hear it said: The man gets no corn from his field because he takes no trouble to see that it is sown or manured. Or, The man has got no wine, for he takes no trouble to plant vines or to make his old stock bear. Or, The man has neither olives nor figs, because he doesn’t take the trouble; he does nothing to get them.

It is not the farmers reputed to have made some clever discovery in agriculture who differ in fortune from others: it is things of this sort that make all the difference, Socrates.

This is true of generals also: there are some branches of strategy in which one is better or worse than another, not because he differs in intelligence, but in point of carefulness, undoubtedly. For the things that all generals know, and most privates, are done by some commanders and left undone by others.