Buddhism is the law of nature. What the Buddha perceived and taught is the law of nature.
The most important focus in the Mahayana is the bodhisattva ideal, the path of the bodhisattva – one who is altruistically dedicated to gaining enlightenment not just for one self, but for the sake of all other sentient beings. With this as the motivation, profound practices aimed at developing the mind of compassion were taught and expanded upon.