namaste...As taught to me by my ex-landlord from India "Namaste" means "Hello." He taught me some phrases in Bengali and Hindi(Sanskrit is not spoken much anymore, Bengali and Hindi is.). It has beautiful, heartfelt meaning behind the greeting, you touch your forehead and join your hands together at your heart, it represents giving your mind, heart and soul into your greeting.
The tree of life connects the ground and our physical existence to the skies and the heavens. It unites all forms of life to mother earth and the universe. It is widely recognised and cited in many faiths and cultures including Christianity, Buddhism, Islam, Judaism, Hindu and Baha'i - all over the world, uniting all of humanity and the universe as a whole.