life / lifespan / lifetime / fate, destiny / (figuratively) the most important part or aspect of a thing

beg / invite / ask

命: life

indifference to potential loss to life; recklessly dangerous

敵: enemy; opponent / 趯: the fourth of the Eight Principles of Yong

的: adjectival suffix

意識: consciousness

遺書: will - a legal document that states who is to receive a person's estate and assets after their death. / 医書: medical book

foundation stone / (figuratively) foundation (of a field of study, etc.)

石杖, 石末: a surname