没有这种精神刺激，人类合作就完全不可能；

With absence of mental stimulus of this kind, human cooperation would be entirely impossible;

youdao

同样，如果没有这种精神，将变得毫无生气。

Similarly, if not the spirit, will become lifeless.

youdao

如果我们整年都能保有这种精神，会有多么神奇。

How miraculous it would be if we could keep this spirit throughout the year.

youdao

Thus, the dictum could be dared in the psychoanalytic school: at bottom, nobody believes in his own death.

在精神分析学院会有这种说法：,说到底，没人相信自己的死亡。

耶鲁公开课 - 死亡课程节选