关于它是由什么构成的，人们有各种不同的看法，但大家一致认为，有这样一种本质是存在的，也就是说，有一种东西可以作为人就是人的依据。
There were various views about what constitutes it, but there was agreement that such an essence exists—that is to say, that there is something by virtue of which man is man.
科学家提出了许多关于人类为什么哭的理论，但没有一个得到证实。
Scientists have advanced many theories about why human beings cry tears, none of which has been proved.
这可能也不是什么新鲜事。一个关于茱莉亚·查尔德的众所周知但并不准确的故事可能造成了这个食物流言。
It's probably not a new one either. A well-known, but inaccurate, story about Julia Child may have contributed to this food myth.
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