“Who does not in some sort live to others, does not live much to himself.”
Book III, Ch. 10
Attributed
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Michel De Montaigne 264
(1533-1592) French-Occitan author, humanistic philosopher, … 1533–1592Related quotes

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“It is easy to live for others; everybody does. I call on you to live for yourselves.”
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As for a few trifling delusions like the "past" and "present" and "future" of quote mankind unquote,they may be big enough for a couple of billion supermechanized submorons but they're much too small for one human being.
Re Ezra Pound (p. 69)
i : six nonlectures (1953)

280
Daybreak — Thoughts on the Prejudices of Morality (1881)
“Who wills, Can.
Who tries, Does.
Who loves, Lives.”
Source: "Dragonrider", published in Analog (January 1968), p. 148; also in Dragonsong, (1976) Ch. 7, p. 89