He also expressed skepticism over the human benefits of some scientific advances, arguing that scientific advance would bring grief, rather than progress to mankind, unless it was accompanied by a similar advance in ethics.
Unless it was accompanied by a similar advance in ethics. This was what he expressed skepticism over the human benefits of some scientific advances. Scientific advance would bring grief. This was what he was arguing. Scientific advance would progress to mankind. This was what he was arguing. It was accompanied by a similar advance in ethics.