Who is Dr. Ellis Konigswasser from Welcome to the Monkey House and what is their importance?

The Doctor is the inventor of becoming amphibious. He believes this is the most important discovery in all of human history. He was always unhappy in his body growing up. He did not understand why it was necessary. The mind is the real human, and it is imprisoned in the flesh. As a mathematician, the Dr. was always very absentminded and "in his head." So much so, that one day he walked right out of his body. After figuring out exactly how he did this, he kept doing it and only spent time in his body so he could write a book about what he discovered. His book was rejected by 23 publishers. The 24th sold it and made millions. Other people started becoming amphibious. Now there are over a billion amphibious people.