Akademik

motto
noun
a) A sentence, phrase, or word, forming part of an heraldic achievement.

"It was the motto of a bishop eminent for his piety and good works, ... Serve God, and be cheerful." -Addison.

b) A sentence, phrase, or word, prefixed to an essay, discourse, chapter, canto, or the like, suggestive of its subject matter; a short, suggestive expression of a guiding principle; a maxim.

Wikipedia foundation.