"Listen, nothing's better than being useful. Tell me how, at the present moment, I can be most of of use. I know it's not for you to decide that, but I'm only asking for your opinion. You tell me, and what you say I swear I'll do! Well, what is the great thought?" "Well, to turn stones into bread. That's a great thought." "The greatest? Yes, really, you have suggested quite a new path. Tell me, is it the greatest?" "It's very great, my dear boy, very great, but it's not the greatest. It's great but secondary, and only great at the present time. Man will be satisfied and forget; he will say: 'I've eaten it and what am I to do now?' The question will remain open for all time."