"The origin of thought and language" by M. Montcalm is a study of one of the most interesting phenomena in human history - the origin of thinking and speech. The author examines the evolutionary processes that led to the appearance of a person's ability to analyze the world around him and express his thoughts in words. The book looks for answers to questions about how ancient people began to perceive information, turn it into thoughts and transmit ideas to others. This is a fascinating journey into the world of the evolution of thinking and speech, which helps to understand the uniqueness and complexity of human intelligence.