This study surveys theories about the origins of human thought and speech, evaluating linguistic, psychological, philosophical, and anthropological perspectives. It compares hypotheses about early language development, animal communication, and primitive societies; analyzes ancient texts and myths, including Vedic material and Hebrew sacred writings; and engages Kantian concepts such as sensation, space, time, and the categories of understanding. Throughout it examines how metaphor, naming, and religious ideas shape conception, and offers reflections on abstraction, attention, and the structure and function of words as tools for cognition.