egoism
/ˈegəuɪzəm; ?@ ˈi:g-; `iɡoˌɪzəm/ n[U]
1 (usu derog 通常作贬义) state of mind in which one is always thinking about oneself and what is best for oneself 总考虑个人和个人利益; 自私自利.
2 (philosophy 哲) theory that our actions are always caused by a wish to benefit ourselves 利己主义; 自我主义. Cf 参看 altruism.