Where do Languages come from?

So where did all these languages present in the world today come from? We don't know for certain how languages first came about, but there are several theories. One theory, favoured by Plato and Pythagoras is the Ding-dong theory. This theory maintains that speech originated by people making sounds that were in harmony with the world around them, for example, compare the sound of words such as moon, mountain and volcano with cricket, seed. In many languages, words associated with large objects contain 'o' or 'ou'. On the flip side of the coin, words associated with the vowels 'i' and 'e' were considered to be smaller, for example, 'little'
Other theories included the Mama theory which said that languages started with the easiest sounds associated with the most important objects, the ta-ta theory influenced by Darwin which said that language came about through body movements, and the sing-song theory which says that language came about through the sounds made during work and play and that the original noises were actually long and musical as opposed to short grunts.
These and other theories can be found at:
http://webspace.ship.edu/cgboer/langorigins.html