The document discusses several proposed sources for the origins of human language: 1) The divine source - Some religions believe language was given by God. 2) The natural sound source - Early humans imitated environmental sounds which evolved into words. 3) The social interaction source - Language emerged from sounds used in social interactions and tasks. 4) The physical adaptation source - Human physical features support speech production. 5) The tool-making source - The ability to use tools may be connected to the development of language in the brain. 6) The genetic source - Humans have an innate capacity for language due to genetic factors.