- immediate material needs; one that needs food for the body
- but is oblivious of the necessity of providing food for the mind; failing to meet one's mental needs.
- Philosophy is inaccurate and uncertain of things
The achievement of knowledge through criticism, "which gives unity and system to the body of science."
- Are good and evil important to the universe or only to man?
- Is consciousness an accident or a permanent part of the universe in hopes of growing wisdom?
- A man who has no interest in philosophy goes through life imprisoned from the opinions, beliefs, and predudices from the people around him.
- Although philosophy is unable to tell us with absolute certainty what are the true answers to the doubts, it is able to suggest many possibilities that can broaden our thoughts and free us from custom though.
- we cannot hope for definite answers or even high degrees of certainty.