The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.

I’m not here to please everyone.

The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.

We are all susceptible to biases, even when we think we're being perfectly rational.

文章是用来承载道理的，道理通过文章得以阐明。