Quote by Johann Wolfgang von Goethe
If a man writes a book, let him set down only what he knows. I have guesses enough of my own.
Summary
This quote emphasizes the importance of writing from personal knowledge and expertise rather than basing one's ideas solely on speculation. It encourages authors to only present information that they are genuinely familiar with, as opposed to relying on unfounded guesswork. By doing so, the quote implies that a writer should prioritize integrity and credibility in their work, and that excessive guesswork can undermine the reliability and legitimacy of their ideas.