I was fascinated to come across Carl Sanburg's comparison to life as an onion. It's interesting from the perspective of self examination to continually ask the questions, "Who am I?" and "How does God see me?" The nearer I draw to Him, the more I will know myself.
I'm reading the section in the Catechism of the Council of Trent on the Ten Commandments. It pretty much encompasses and summarizes the entire law of God which Jesus further expounded on in His sermons. The fifth commandment, "Thou shalt not kill," rendered more accurately as "Thou shalt not murder." also forbids hatred and acts that injure others or oneself. As Jesus says: