a belief (or system of beliefs) accepted as authoritative by some group or school
source: WordNet 3.0
the rational investigation of questions about existence and knowledge and ethics
source: WordNet 3.0
any personal belief about how to live or how to deal with a situation
Self-indulgence was his only philosophy. My father's philosophy of child-rearing was to let mother do it.
source: WordNet 3.0
Literally, the love of, including the search after, wisdom; in actual usage, the knowledge of phenomena as explained by, and resolved into, causes and reasons, powers and laws.