税收应该简化，以促进经济的发展。
I am convinced that the substitution of a simple tax on the rent of land for the complicated taxes which at present oppress industry would be advantageous to all classes.
The leather industry must evolve or risk becoming obsolete.
未来属于那些能够平衡短期结果与长期愿景的人。
我不是一个回头看的人，我总是向前看。
人类心智是一套信息处理机器，由自然选择设计来解决我们狩猎采集祖先面临的适应性问题。
人生苦短，不能不冒险。
The more you know yourself, the more patience you have for what you see in others.
只有死亡才能看到战争的终结。
