Self-interest; prioritizing one's own benefit or advantage. A concept used in ethics and sociology referring to an attitude that values oneself over others.
利己的な行動は短期的には得でも、長期的には信頼を失うことがある。
Selfish behavior may pay off in the short term, but it can lead to loss of trust in the long run.
彼の考え方は利己より利他を重視している。
His way of thinking emphasizes altruism over self-interest.
経済学では利己的な動機が市場を動かすと考えることがある。
In economics, it is sometimes believed that self-interested motives drive markets.