He doesn't make the claim about the general utility of freedom

他没有宣扬自由或无限制言由的
or unlimited speech.

普遍功用
Rather, he maintains as he puts it near the end of the defense speech,

实际上他把主张放在了自辩演说靠近结尾的部分
that the examined life is alone worth living.

受考验的人生孤独但有意义
Only those, in other words, engaged in the continual struggle to

仅此而已换言之
clarify their thinking, to remove sources of contradiction

不断进行斗争来澄清思想
and incoherence, only those people can be said to

消除矛盾与无绪的来源的人的人生
live worthwhile lives. "The unexamined life is not worth living."

才有意义 "没有考验的人生毫无意义"
Socrates confidently, defiantly asserts to his listeners,

苏格拉底对其听众和观众
to his audience.

自信而自傲地如此断言
Nothing else matters for him.

其他的事与他无关
His, in other words seems to be a highly personal,

换言之他似乎是个极有个性的人