Denshi Jisho — Online Japanese dictionary

Found 4 sentences.

利己主義化身 He is the personification of selfishness.
徹底した利己主義 He is a thorough-going egoist.
単なる利己主義に過ぎない He is nothing more than an egoist.
とりわけ我々利己主義になってならない Above all things, we must not be selfish.