The language can be learned. Child French-speaking parents living in France, not born with the ability to speak French. However, barely reaching the age of five years, the child can easily learn to speak French. The child is the German-speaking parents living in Germany, just as easily learn to speak German.
And it is not because of any child born with special abilities to the language of their parents. If the children of French and German families would have been exchanged in infancy, a small, Pierre learned to speak «Auf Henderson, a baby Hans could be equally at ease to say “Au revoir». And if the young Pierre, and Hans were in the early years his life in America and would grow with American children, they both learned to speak «Good bye», without any accent.
Any normal child will study whatever the language spoken by people around him, regardless of how a native language of his father and mother.
As you can see, the language, thus, can not be a sign of race. If you close your eyes and hear the voice of someone who speaks perfect English, then you can not say for sure how come the parents of this man, from New York, Shanghai or Timbuktu. Hearing only the human voice, you can not tell what color his hair, head shape or growth.
The same applies to food that people love, and clothes, which he prefers to wear. These taste preferences depend on what he was accustomed to since childhood. Children of immigrants in America just as easily become accustomed to hamburgers and baked beans, as children age-old American parents.
Differences between people who are the result of learning, called cultural differences. Cultural differences can not be taken into account for classifying people into races. It would be like trying to divide the various breeds of dogs, according to the tricks that they could do. Imagine this division: all the dogs that can “portray the dead”, belong to one breed, and all those who can “sit back and ask” – to the other!
What we must do is to find the human characteristics that are not
outcomes. We must find those features with which each person is born, or that develop as it grows, but without any outside interference. For example, a child is born with ten fingers and ten toes. And this was long before they have grown his hair and eyes have a certain color. By the time his older person reaches a certain growth and becomes an individual figure. Differences in these characteristics, including size, shape and color of various parts of the body – all these physical differences. These differences are used by anthropologists (scientists who specialize in the study of man), to divide people into different races.