According to
Buddhism, the basic teaching is everything changes. Because of this
teaching his descendants or his disciples treated Buddha as a teacher of heaven
and earth. He is not only a teacher of this world, he is a teacher of
heaven. Because even though you go to heaven, this teaching, that everything
change, we must be different, you know, is also true in heaven. So he is called a
teacher of heaven and earth because of this teaching that everything changes.
And this is the basic foundation of Buddhism, Buddhist teaching. -------------------------------- Excerpt from Shunryu Suzuki lecture - 68-06-28 as found on shunryusuzuki.com. Edited by DC