The challenges in our lives are there to strengthen our convictions. They are not there to run us over.

聪明人的问题是，他们在愚蠢的人看来就像疯子。

Progress in agriculture must be measured not just in yield, but in long-term environmental impact.

Life is about creating yourself.

在危机时刻，真正的领导力是通过行动而非言语来衡量的。

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.