The importance of the invisible—
That I'd starve to death, in the midst of eatables, were it not for the invisible means of locomotion by which I go and get them, and the untouchable and unseeable processes by which I digest them—
That every stout and determined materialist, arguing his rejection of the unseeable and the untouchable, lives in a phantom existence, from which he would fade away were it not for his support by invisibles—
The heat of his body—and heat has never been seen. His own…