Synthesized answer
The provided passages do not contain the answer to the question "What are the practical implications?". The passages are from "Early and Miscellaneous Letters by Johann Wolfgang von Goethe" and are titled "Letters for the Advancement of Humanity (1793-1797)". However, no content from these letters is included, so the practical implications cannot be determined from the given text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Early and Miscellaneous Letters by Johann Wolfgang von Goethe Pages: 440