The student majors in philosophy.
Our tax system is still without coherent philosophy.
I majored in philosophy at my university.
My elder brother is an authority on philosophy.
My brother's an authority on philosophy.
The study of philosophy belongs to the humanities.
Philosophy is often regarded as difficult.
The great critic and poet is lecturing on philosophy.
Philosophy is not so difficult a subject as you imagine.
Modern philosophy has its beginnings in the 19th century.