We call it - sometimes, it's in the face as a general rule.

一般说来，它可以在脸上看出来。

youdao

Sometimes I have thought it would be an excellent rule to live each day as if we should die tomorrow.

有时我想到，过好每一天是个非常好的习惯，似乎我们明天就会死去。这种态度鲜明地强调了生命的价值。

youdao

Sometimes I have thought it would be an excellent rule to live each day as if we should die tomorrow. Such an attitude would emphasize sharply the values of life.

有时我想到，过好每一天是个非常好的习惯，似乎我们明天就会死去。这种态度鲜明地强调了生命的价值。我们应该以优雅、精力充沛、善知乐趣的方式过好每一天。

youdao

Our primate background provides that kind of thing, but the specific rules that our society adopts are not contained in biology, and sometimes people confuse that when I say that morality is contained in our biology, that every rule we follow has to come out of biology.

CNN: He studies where morals come from