This chapter proposes how to address in the MTCS course topics associated with the nature of the discipline of computer science and with cross-curriculum topics. The importance of these topics is explained by the fact that even today no consensus has been reached with respect to one agreed-upon definition for computer science, and different scholars view it differently. Specifically, the following topics are discussed in this chapter: what is computer science, the history of computer science, computer scientists, social issues of computer science, programming paradigms, and computer science soft ideas. For each topic, its meaning and its importance and relevance in the context of computer science education are explained, and then, several activities which deal with the said topic are presented.