There is little that separates humans from other sentient beings - we all feel joy, we all deeply crave to be alive and to live freely, and we all share this planet together.
Those who show pity and are always ready to help during times of trouble are seldom the same ones who rejoice in our joy: when others are happy they have nothing to do, they become superfluous and lose their feeling of superiority, and so they easily show their displeasure.
Keep the commandments of God. If you have sinned, the sooner you begin to make your way back, the sooner you will find the sweet peace and joy that come with the miracle of forgiveness. Happiness comes from living the way the Lord wants you to live and from service to God and others.
Thought is a key to all treasures; the miser's gains are ours without his cares. Thus I have soared above this world, where my enjoyments have been intellectual joys.