Philosopher

Noun

1. A lover of wisdom.
2. A student of philosophy.
3. A scholar or expert engaged in or contributing to philosophical inquiry.
4. A person who applies the principles of philosophy to the conduct of their life, as by acting calmly and rationally in the face of inevitable change.
5. A student, scholar, or expert in any branch of knowledge, especially those branches studied prior to being considered part of pure science.