SuGoiSuす語彙すGrammar › N1 · 11 Formal and written style
〜たるもの: as someone who is a (role)
N1 · 11 Formal and written style
Says a person in an important role should act in line with that role.
Noun of role + たる者(もの)は + should-statement: 教師たる者, 親たるもの. Formal, a little old-fashioned and lecturing. The noun must be a role or position, and the sentence often has べき or なければならない.
Examples
教師たる者は、常に生徒の手本であるべきだ。
One who is a teacher should always be a model for the students.
リーダーたるもの、責任から逃げてはいけない。
A person who is a leader must not run away from responsibility.