According to Emerson, there were three spiritual problems addressed about nature for humans to solve, "What is matter? Whence is it? And Whereto?". What is matter? Matter is a phenomenon, not a substance; rather, nature is something that is experienced by humans, and grows with humans' emotions. Whence is it and Whereto? Such questions can be answered with a single answer, nature’s spirit is expressed through humans, "Therefore, that spirit, that is, the Supreme Being, does not build up nature around us, but puts it forth through us", states Emerson. Emerson clearly depicts that everything must be spiritual and moral, in which there should be goodness between nature and humans.