老朽lǎo xiǔdecrepit and behind the times; old; useless; (humble) I; me (used by the elderly)
永垂不朽yǒng chuí bù xiǔeternal glory; will never be forgotten
三不朽sān bù xiǔthe three imperishables, three ways to distinguish oneself that aren't forgotten by history: through one's virtue 立德, one's service 立功 and one's writings 立言 (from the Zuo Zhuan 左传)