货币联盟不仅仅是经济问题，还涉及政治以及各国为更大稳定性而放弃部分主权的意愿。

如果狮子能说话，我们也无法理解他。

The best way to learn AI is by doing projects and solving real-world problems.

我是真正MC的定义。

The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.

在变革时期，学习者将继承地球，而学富五车的人会发现自己装备精良，却面对一个不复存在的世界。

The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.