One should not kill a living being, nor cause it to be killed, nor should one incite another to kill. Do not injure any being, either strong or weak, in the world.
Solitude is happiness for one who is content, who has heard the Dhamma and clearly sees. Non-affliction is happiness in the world - harmlessness towards all living beings.
Buddha taught kindness towards lower beings; and since then there has not been a sect in India that has not taught charity to all beings, even to animals. This kindness, this mercy, this charity - greater than any doctrine - are what Buddhism left to us.
The nature of Buddhism, as I understand it, is to believe that we are all pure and radiant at our core. And yet we see around us so much evidence that people are not acting from a place of purity and radiance.
One interesting thing about greed is that although the underlying motive is to seek satisfaction, the irony is that even after obtaining the object of your desire you are still not satisfied. The true antidote of greed is contentment.