What are the external signs of a person and how are they related to the inner world?

Sometimes we form an opinion about a stranger, relying only on his external signs. Some statements have even moved into the rank of stereotypes that we unconsciously use. For example, if a person has a high forehead, then he is definitely very smart. If the lips are thin, then they will definitely deceive. But these stereotypical signs are not always correct. However, sometimes the appearance can tell us about the character. Men with long hair are dreamers. Those with blue eyes, scientists say, are more susceptible to pain.