They didn't move, unless they were driven to move.

除非万不得已他们不喜欢迁徙
That was the natural thing to do given the character of life,

生活的意义就是定居一处种田养家
which was based upon farming, if you leave you lose your farm,

离开了这片土地就失去了食物的来源
and based upon the difficulty of transportation.

另外古时的交通非常落后
In the Greek world we know --

我们都知道在古希腊时期
I think I quoted something from hesiod that confirmed it.

我记得当时我引用了赫西奥德的话
The Greeks were, even though they went to sea plenty,

那时的古希腊人虽然时常出海
they were terrified of the sea for very good reason.

但他们也是非常惧怕大海的
Their ships, their boats were not very seaworthy;

他们航海的工具船只还非常脆弱
storms come up in the Mediterranean very suddenly and terribly;

地中海可怕的风暴神出鬼没
you take your life in your hands when you travel.

当时出海就意味着你把自己交给命运处置
So then there's the whole idea--we've already given you some sense

所以这就是当时的情况我告诉过你们