Communication is the ability of a man to express in his environment and to display himself or something that he represents. Since we exist we communicate in different ways, oral, written and non-verbal such as gestures and body postures, facial expressions. Communication is important in every aspect of life, not only communicating to express feelings and leave an impression, but by communicating we learn and teach others. This thesis describes how valid communication looks, the flow of information from its formation, its transmission until it’s received by the recipient. The key to any successful communication and issues that the message comes across is described. Today is a time in which the valid information is more necessary than ever. In variety of media, literature that an individual faces, whether reading or researching, information’s heard or read at some point may mean more if the individual knows in which moment the information is needed and how to take advantage of it. This is why every sender, creator of some information has to know how to design the message and the proper way to ensure that it reaches the recipient. Public appearances such as political, public relations and commercial advertising must have a clear and influential message so that the message is not aggressive and manipulative, but in the valid way depending on the need of speech or appearance, to create a picture of the said and thus forms or transforms the recipients option, that in some cases it affects the recipients decision. This thesis will try to show how to avoid unwanted manipulation, thus to right way to show the purpose and goal of the objective and the influential communication, especially when its necessary for public speaking and when it’s the primary to preserve the reputation and leave right impression, especially if it’s an appearance in front of a lot of people. The first half of the thesis will be directed to the general terms of communication and getting to know the information and its role. The other half of the thesis will focus on the rhetoric, its terms, purpose of public speech and as its examples speeches in public relations, media advertising and political speeches, thus their influence on the recipients of the message.