About the book: 1967 / In the series “Scientists talk with believers” we highlight the most important events in the life of various sciences. A number of brochures are devoted to biological science. The brochure by the same author, “This is how biology began,” talked about the development of this science before Charles Darwin. The proposed brochure reports on three milestone discoveries in biology, in particular, the first chapter is dedicated to Charles Darwin, whose works constituted an entire era and armed naturalists with a truly scientific method for studying nature. The essence of life and the progressive development of living nature will be discussed in the following brochures.