The righteousness of Jesus Christ is one of those great mysteries, which the angels desire to look into, and seems to be one of the first lessons that God taught men after the fall. ↗
Some mystery should be left in the revelation of character in a play, just as a great deal of mystery is always left in the revelation of character in life, even in one's own character to himself. ↗
Even if you only want to write science fiction, you should also read mysteries, poetry, mainstream literature, history, biography, philosophy, and science. ↗
Watching a whole cluster of friends, and my own mother, die over quite a short space of time convinced me that purely materialist 'explanations' for our mysterious human existence simply won't do - on an intellectual level. ↗