As soon as you concern yourself with the 'good' and 'bad' of your fellows you create an opening in your heart for maliciousness to enter. Testing competing with and criticizing others weaken and defeat you.
Love is like a friendship caught on fire. In the beginning a flame very pretty often hot and fierce but still only light and flickering. As love grows older our hearts mature and our love becomes as coals deep-burning and unquenchable.