Every body is restricted by the outside world, cited the theory of social contrast( or compact) of Rousseau. Responsibility of one's behavior will more or less benefit the community and the society. Society is generally regarded as the relationship between human beings and their interaction with others and the environment, which acts on human powerfully. It is impossible that there is no interaction between human and nature, which means behaviors of human not only depend on their own choices but also influenced by external factors. Therefore, good behavior consequently contribute a friendly environment to the surrounding. For instance, people would turn down their volume in public, although they might be amplifiers at privacy. Such consensus then became the standard measure of the quality of one person.
　　The behavior of a person affects the society as well as himself. The circumscription is rather rigid that once breaking the rules, one will suffer penalty sooner or later. Black Vick, perpetrator of the shooting in Oslo, who listed quite a few celebrities into his devastating  plan, and tried series tasks ranging from massive explosion to decimated killing, was locked in the dock then judged by law ultimately.
　　Both internal factors and external ones construct the frame of a person. The internal factors come in a variety of personalities, ranging from physical capability to moral sensibility.For external factors, force majeure, social ideology and public opinion are depicted as the dominant ones. The yellow fever emerged in 1793, which caused great destruction in Memphis, presented a case for synthesis of internal and external factors. The citizens and the government did everything they could to protect the city from slaughter, but the city still lost its charter considering the disability of contemporary technique to suppress deaths. 
    Assuming that you were the very vital person of a negotiation, which was crucial and decisive for both your career and your company. Then you have to travel a long distance but unfortunately hampered by a on-going tornado. Not a single vehicle, such as ship, airplane or car, was available, therefore, surely, you and your boss even your workmates were all influenced by force majeure however reluctant you were. You knew that fighting the tornado back is[was] impossible and changes must be made.You might call your boss and other participants to rearrange the schedule rather than rushed onto the shaking street instinctively. One cannot behave without restriction, although a large part of the regulation formed along with human civilization has been such subtle leaven that we can hardly notice it.　　Admittedly, our endeavors is appreciable when confronting with the natural catastrophe or social unfairness, which hindered the development of humanity. But can anyone tell for sure that such behaviors are free of outer influence?　　In conclusion, I stand for the view that people's behavior is not only one's own choice, but also the result of external effects.