In the quote, the teacher is portrayed as a guiding figure who sees the entire world as his students, emphasizing a broad and inclusive approach to education and influence. It suggests that his role is like that of a teacher preparing to instruct, inspire, or lead in a significant way.
The phrase "and class was about to begin" hints at an impending event or challenge, indicating that this teacher is ready to take action or deliver important lessons. This metaphor communicates a sense of readiness, purpose, and the idea that learning or growth is about to unfold on a large scale.