(てつがく)

てつがく
noun
philosophy
1. philosophy
The academic study of fundamental questions about existence, knowledge, values, and reason.
I studied philosophy at university.
To compare Western and Eastern philosophy.
Ancient Greece is the birthplace of philosophy.
2. philosophy, outlook, principles
A person's fundamental beliefs or guiding principles.
He has his own philosophy.
Having one's own philosophy in life is important.
I resonate with that company's business philosophy.

COMMON COMPOUND WORDS:

USAGE NOTE:
In everyday speech, 哲学(てつがく) often refers to one's personal principles or approach to life/work rather than the academic discipline.