We assume, to begin with, that the individual is at least as complex in his internal structure as the language is which he speaks - otherwise, how could he speak a language which is complex? ↗
Parents provide their children with genes as well as an environment, so the fact that talkative parents have kids with good language skills could simply mean that and that the same genes that make parents talkative make children articulate. ↗
Art works because it appeals to certain faculties of the mind. Music depends on details of the auditory system, painting and sculpture on the visual system. Poetry and literature depend on language. ↗
Language is always evolving. It's difficult to read Shakespeare now because language has shifted. Similarly, kids these days can get to the point really quick in about 140 characters or less because of these new tools. ↗