Youth would be an ideal state if it came a little later in life.
As a scientist, I am not sure anymore that life can be reduced to a class struggle, to dialectical materialism, or any set of formulas. Life is spontaneous and it is unpredictable, it is magical. I think that we have struggled so hard with the tangible that we have forgotten the intangible.
If your parents never had children, chances are you won't, either.
It's the opinion of some that crops could be grown on the moon. Which raises the fear that it may not be long before we're paying somebody not to.
We should be eternally vigilant against attempts to check the expression of opinions that we loathe.
If you want creative workers, give them enough time to play.
The toughest question has always been, "How do you get your ideas?" How do you answer that? It's like asking runners how they run, or singers how they sing. They just do it!