source: By After Lysippos - Jastrow (2006), Public Domain

noun (plural philosophies)

the study of the fundamental nature of knowledge, reality, and existence, especially when considered as an academic discipline. See also natural philosophy.

哲学

a particular system of philosophical thought:

e.g. Schopenhauer’s philosophy.

the study of the theoretical basis of a particular branch of knowledge or experience:

(学問の一分野の)一般理論, 哲学; 原理

e.g. the philosophy of science.

a theory or attitude held by a person or organization that acts as a guiding principle for behavior:

人生観, (個人的な)物の見方

e.g. don't expect anything and you won't be disappointed, that's my philosophy.

Middle English: from Old French philosophie, via Latin from Greek philosophia ‘love of wisdom’.