The Duality of Life.
Strike a balance in your life. Life is about duality. Night and day. Male and female. Cold and heat. Up and down. Take a day for instance. Time strikes a perfect balance between light and darkness to create a day. To be successful, you must be good. But your goodness must be balanced. Don't be so good to the point people take advantage of you. Too much goodness leads to niceness. And niceness hardly produces success.
16.746 SRY