可持续性不是一种选择，而是我们对下一代的责任。
Sustainability isn't an option—it's a responsibility we owe to the next generation.
译文：学习贵在实践，而非空知;贵在有用于世，而非无用之学。反对空谈，提倡经世致用。
The work of art is already within the block of marble. I just have to chisel away the superfluous material.
自由民主的传播和世界经济的整合是现代时代最重要的两个趋势。
Technological breakthroughs require long-term investment and patience; short-term gains should not be the focus.