This is the manner of noble souls: they do not want to have anything for nothing; least of all, life. Whoever is of the mob wants to live for nothing; we others, however, to whom life gave itself, we always think about what we might best give in return... One should not wish to enjoy where one does not give joy.
It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure.