Any scientist of any age who wants to make important discoveries must study important problems. Dull or piffling problems yield dull or piffling answers. It is not not enough that a problem should be "interesting. ". . . The problem must be such that it matters what the answer is-whether to science generally or to mankind.
The funniest jokes you know aren't from comics but relatives, friends - from your life. That's the funniest stuff.