The Master said to a class of very young pupils: "I shall now give you a set of questions that you must think about in one, i.e. you must think about them, let them all play together in your Mind.
First is: Why should this lovely tree, that is very comfortable here, bother to grow bigger, as it shall be next year?
Second: Why should an animal, just awake after a full sleep on a full belly, when not hungry yet, start exploring his surroundings that are already familiar to him?
Third: Why should a man glare at you angrily when you are reading his newspaper from the opposite place?
Fourth: Why should a candidate for the presidency, pay huge fortunes in campaigning, while he could easely live in comfort from the interest alone, not being nagged and bothered as president?
Now why, Yo, are you grinning so obviously?"
"Because I know the answer already Master, it is the basic drive behind all ideation."
"Very good Yo, then, you may put it on paper when you like. But think of other examples please." [6], [11]