We owe a deep debt of gratitude to Adam, the first great benefactor of the human race: he brought death into the world.
The person who knows one thing and does it better than anyone else, even if it only be the art of raising lentils, receives the crown he merits. If he raises all his energy to that end, he is a benefactor of mankind and its rewarded as such.
He is a benefactor of mankind who contracts the great rules of life into short sentences, that may be easily impressed on the memory, and so recur habitually to the mind.