They are always mistaking the one for the other.

It is because they cannot see into the future.

What I am doing for the villagers will bear good fruit some day; in some cases to themselves; in others, to unborn generations of men.

No one will ever know that I was the cause, but it will be none the less true, for all that.

Among you boys you have a game: you stand a row of bricks on end a few inches apart; you push a brick, it knocks its neighbor over, the neighbor knocks over the next brick--and so on till all the row is prostrate.