the study of the nature of knowledge and existence and the principles of moral and aesthetic value
Philosophy is at once the most sublime and the most trivial of human pursuits — William James
the philosophical principles or teachings of a specified individual, group, period, or field of study
the sum of beliefs and attitudes of a specified individual, group, or period
equanimity in the face of trouble or stress
[Middle English philosophie via French and Latin from Greek philosophia, from philosophos: see philosopher]