“The life given us, by nature is short; but the memory of a well-spent life is eternal.”
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

“As a well-spent day brings happy sleep, so life well used brings happy death.”
The Notebooks of Leonardo Da Vinci (1938), I Philosophy

The Notebooks of Leonardo Da Vinci (1938), I Philosophy

“The promise of eternal life makes people forsake the life they're given.”
Source: The Final Testament of the Holy Bible

“A well-written Life is almost as rare as a well-spent one.”
Richter (1827).
1820s, Critical and Miscellaneous Essays (1827–1855)

“The eternal life is given to those who live in the present.”

Preface
1910s, The Doctor's Dilemma (1911)
Variant: A life spent making mistakes is not only more honorable but more useful than a life spent doing nothing.
Context: Attention and activity lead to mistakes as well as to successes; but a life spent in making mistakes is not only more honorable but more useful than a life spent doing nothing.

De Pace Fidei (The Peace of Faith) (1453)

“Strictly has just given me a real zest for life. Life is so short. We should all grasp it.”
Alesha Dixon cited in Strictly Come Dancing saved me http://www.ok.co.uk/celebnews/view/231/Alesha-Strictly-Come-Dancing-saved-me/?printer=1 at ok.co.uk, 25 December 2007