In our definitions, we grope after the spiritual by describing it as invisible. The true meaning of spiritual is real; that law which executes itself, which works without means, and which cannot be conceived as not existing.
Ralph Waldo EmersonMen love to wonder, and that is the seed of our science, and such is the mechanical determination of our age, and so recent are our best contrivances, that use has not dulled our joy and pride in them. These arts open great gates of a future, promising to make the world plastic and to lift human life out of its beggary to a godlike ease and power.
Ralph Waldo Emerson