Personal activities should conform to the requirements of the law of social and historical development, because the law of social and historical development is objective and independent of personal will. Only when people's activities conform to the law of social development can they achieve their goals. Social laws exist and act on people's activities, which should be realized through people's conscious and purposeful activities. Without human activities, there is no social law. When people's choices are suitable for the law of social development, they can promote the process of social and historical development and accelerate the realization of the fruits of social law development. Instead, they will be punished regularly and crushed into dust by powerful state machines. Therefore, personal activities should conform to the requirements of the law of social and historical development.