What is important is that one utilizes one's intellect and not to be 100 percent sure about one's convictions. One should always leave room for doubt.
A wise and well-informed humanist has taken the time to look lovingly and wonderingly at the living world around him, and to study the ways in which scientists have tried to analyze the world. . . THE BEST INTRODUCTION TO NATURAL HISTORY THAT HAS YET BEEN WRITTEN.