“While thou livest, while it is in thy power, be good.”
Limited time turns character into a present-tense responsibility rather than a future intention.
Meditations, Book IV, in George Long’s translation.
“Yet no one will bring back the years, no one will bestow you once more on yourself.”
Lost time cannot be restored in the way money or possessions sometimes can, so protecting one’s years becomes a form of protecting oneself.
On the Shortness of Life, Chapter VIII; Seneca warns that even people who know time is precious often give it away without noticing the loss.
“The universe is transformation: life is opinion.”
Change is treated as the condition of the world, while our experience of life is shaped by judgment.
Meditations, Book IV, in George Long’s translation.
“Do every act of thy life as if it were the last.”
Treating action as potentially final concentrates attention on doing the present duty carefully instead of postponing integrity or focus.
Meditations, Book II, section 5, George Long translation; this clause occurs inside a longer instruction about dignity and reason.
“How late it is to begin to live just when we must cease to live!”
The line challenges plans that postpone meaningful living until an imagined later stage when there may be little time left to use.
On the Shortness of Life, Chapter III; Seneca criticizes reserving wisdom and leisure for very old age.
“So teach us to number our days, that we may apply our hearts unto wisdom.”
Awareness of limited time is turned into a reason to choose more wisely rather than merely fear mortality.
Psalm 90:12 in the King James Version.
“It is not that we have a short time to live, but that we waste a lot of it.”
Seneca shifts the complaint from life being too brief to attention and time being poorly spent.
English wording varies by translation.
