The act of walking takes two components. Us and the earth. We cannot imagine walking without Earth or soil or ground or path or a road or call it whatever you may.
We do not exist without our environment. We cannot live without our environment. Can you imagine breathing without air?
Some one, some thing, some force has taken enough care to ensure, that whatever we need to live, we find it in pairs complementing each other.
We cannot walk without earth. We cannot breathe without air. We cannot eat without the growth on our planet.
The act of breathing cannot be achieved without us and the environment around us. This necessity, this support and the discipline that ensures that we find whatever we need and we find ample amounts of what is needed is created by a factor, or an energy or a holistic thought process.
This factor is called love !