When you no longer have expectations, the unexpected kindness of others and small acts of consideration become like "sweet manna from heaven." The feeling that rises spontaneously within one's heart at such times is true gratitude. When one is accustomed to kindness, one can lose the feeling of gratitude. One must constantly return oneself to the spiritual starting point of no expectations.
As the human species awakens to itself as a collection of immortal souls learning together, care for the environment and the earth will become a matter of the heart, the natural response of souls moving toward their full potential.