The practice of philosophy is a careful, in-depth study of humanity’s most basic ideas, presuppositions, and beliefs. Its goal is to understand as clearly as possible one’s conception of the world and humanity’s place in it, and to see to what extent one’s beliefs are justified. Some topics in philosophy include the nature of morality, the justification of law, the possibility of free will, the nature of beauty, the place of mind in a physical world, the nature of perception, the justification of our beliefs, the possibility of knowledge, the social construction of gender, the understanding of the self, the understanding of time and space, the possible existence of god, the nature and possibility of truth, the purpose and proper understanding of language, and the nature of emotions, as well as the point and value of philosophical inquiry.