A house may have many parts to it, i.e., door, roof, living room, window, chimney, etc. but it’s all one house. Likewise, Life may appear as having many “parts,” i.e., people, trees, clouds, sky, earth, stars, water, fire, etc., but it’s all Life. There is nothing that is not Life. Separation is an illusion, a mental distinction/concept not supported by reality. Imagining separation doesn’t make it so, but it does open the door for suffering.