Mental processes are tools for living, and their worth is in their use.

对抗世界的唯一防御是对它的彻底了解。

解析：世间万物都是相对而生，相互依存，体现了老子的辩证思想。

The ability to associate depends, in turn, on the degree to which communities share norms and values and are able to subordinate individual interests to those of larger groups.

永远不要低估一个执行得非常好的简单想法的力量。

"You can't be afraid to fail. It's the only way you succeed."