You get what you give. What you put into things is what you get out of them.

Art should be an adventure of the mind and senses.

人类的选择在于自由和幸福之间，而对于大多数人来说，幸福更好。

劳动的自然价格是使劳动者能够生存并延续其后代所必需的价格，既不增加也不减少。