This paper aims to prove that it is necessary to harmonize verbal and non-verbal communication for quality social interaction. One does not exclude the other but, on the contrary, completes it. If there is a contradiction between verbal messages and non-verbal gestures, there are messages that the interlocutor will not accept as true, credible or ideal at a given moment. In verbal communication, the key is in clearly and precisely expressed ideas, thoughts or feelings, while in non-verbal communication it is important not to look at one separate gesture as a message but the context of several simultaneous non-verbal signs. In social interaction, one should always take into account the personality of each individual and his basics of behavior and his position at the time of the communication process. A number of verbal (means of conveying the message: in person, by telephone, in writing) and non-verbal communication elements are unconscious and depend on how it is conveyed to the interlocutor. What is conscious, such as spoken words or "learned" gestures, is only part of the message we convey to the other person. In order for social interaction to be of good quality and ultimately bring the desired result in the communication process, interlocutors must "know how to listen", eliminate communication noises as much as possible, respect the interlocutor regardless of social status and reinforce verbal messages through nonverbal communication.