The key to successful livestock farming lies in balancing productivity with animal welfare.

阅读的习惯是唯一没有掺杂任何杂质的享受；当所有其他乐趣消失时，它依然存在。

写作是一种不被中断的谈话方式。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.