He is the so-called father of the modern school of chess; before him, the King was considered a weak piece and players set out to attack the King directly. Steinitz claimed that the King was well able to take care of itself, and ought not to be attacked until one had some other positional advantage. He understood more about the use of squares than Morphy and contributed a great deal more to chess theory.
Well, I kind of split my life into two pieces. One was where my chess career lies. There, I kept my sanity, so to speak, and my logic. And the other was my religious life. I tried to apply what I learned in the church to my chess career too. But I still was studying chess. I wasn't just "trusting in God" to give me the moves.