1) The document discusses philosophical activity and what distinguishes a philosopher from others. It argues that philosophical activity involves critically analyzing ideas rather than passively accepting pre-packaged ideologies.
2) A philosopher wonders about fundamental concepts and questions socially accepted assumptions by thinking independently. However, philosophical activity requires more than just wondering - it is a search for truth and understanding of reality through dedication to knowledge.
3) True philosophical activity moves beyond just developing critical thinking skills. It requires gaining an accurate understanding of reality by exiting the cave of limited perspectives, as in Plato's allegory. A philosopher sees the true nature of things that others do not due to narrower horizons.