(Platonic) ideal (of how things ought to be, e.g. human rights); foundational principle; idea; conception (e.g. of the university); doctrine; ideology
会社の理念に共感して入社した。
I joined the company because I resonated with its principles.
理念を掲げるだけでは不十分だ。
Just declaring ideals is insufficient.
創業者の理念は今も受け継がれている。
The founder's ideals are still carried on today.