The Solidity of the earth with its gravity is what keeps us grounded. We perceive everything around us and within us in a physical form. Solid Liquid Gas, in some shape form or a structure. If we are not able to identify five physical attributes of this Universe, which are Sound, Touch, Sight, Taste, and Smell also know as "Tanmatra's" with our sense organs Ears, Skin, Eyes, Tongue, and Nose then we use our imagination and create an image.Weexist in this world as our physical bodies.