In my previous post about language, I said that the ability to conceive and communicate complex thoughts is what sets humans apart from animals. I want to make it clear that I do not mean in any way that animals are stupid, on the contrary. However, seeing as they rely on instinct much more than we do — partly because we traded off instinct with learning — they are more radical in their behavior than us. Anybody who tried to calm down a scared cat or dog knows exactly what I mean. I hope this settles any doubts that readers might have had about my point of view.
I have already said that language is the foundation of human culture. It is, however, more than that. Language is one of the very few “inner traits” that define the different ethnic groups, that is traits not immediately visually discernible when seeing someone new. Everybody can tell if somebody has a similar ethnic background: Caucasian people look different than African people, or Asian people. Yet, while is it true that a Swedish will probably look different than an Italian, it will be virtually impossible to discern a Spanish and a Portuguese just by looking at them.