人皆有一死。
All men are mortal, no one lives forever.
终有一死，无人永生。
All men are mortal, because we are all mortal!
每个人都终究一死，因为我们都是凡人！
All men are mortal "is an affirmative proposition."
“人总是要死的”，是一个肯定命题。
The general validity of logic might be called essential, in contrast with the accidental general validity of such propositions as' all men are mortal '.
逻辑的普遍有效性同“凡人皆有死”这类命题的偶然的普遍有效性相对比，可以称为本质的普遍有效性。
The general validity of logic might be called essential, in contrast with the accidental general validity of such propositions as' all men are mortal '.
逻辑的普遍有效性同“凡人皆有死”这类命题的偶然的普遍有效性相对比，可以称为本质的普遍有效性。
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