The worst manifestations of exhaustion were successfully cured by a long period of rest but it was immediately apparent to me that I had lost once and for all my former capacity for carrying out experimental work until physically tired.

Whether that coherence obtains universally is a question that need not be answered here since only those parts where the coherence has actually been found become part of Science.

We know from biology that new forms of organisms simulate their primitive form as closely as possible at first, even though obliged to exist under changed internal and external conditions.

Wilhelm Ostwald Quotes