释义：他强调空气密度对于物质形态的决定性作用，认为物质的形态和性质都受到空气密度的影响。

压力这个词在我们的词汇中被误用了。当你开始考虑压力时，那是因为你已经失去了专注。

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

人类大脑是进化的产物，人类心智也是如此。