Although Darwin's idea was revered in most of the western societies, many Russian intellectuals did not accept his ideas. They feared that accepting Darwin's ideas would harm their morality. One of Darwin's biggest critic was Leo Tolstoy, who felt strongly against what he thought was Darwin's idea. In a letter from his death bed, he warned his children not to take Darwin's struggle for existence as a moral guide. Darwin never suggested his ideas were a basis for human life, just a description of what had happened in evolution.