必须将创造过程视为正常人群在自我实现过程中的表达方式。
The creative process must be explored as the expression of normal people in the act of actualizing themselves.
Every tyrant who has lived has believed in freedom--for himself.
可持续发展不再是选择，而是任何希望长期繁荣的企业的必需品。
A healthy forest ecosystem supports both nature and commerce.
——1963年6月25日在西德市政厅柏林墙前的演说