Human Beings
Nature only responds to what human beings do and think. Animals cannot influence the earth. Birds cannot influence; angels cannot influence; only human life [can], because human beings have been given the power of thought. As Babuji said, what distinguishes [us] from the rest of creation is that we have a will and we have an intellect – the intellect to help us to choose what is right, and the will to enable us to do what is right.
Taken from the book "HeartSpeak 2009 (1st edn., 2010)", Chapter "Questions and Answers", pg. 223, by Revered Chariji