可持续性不是一种选择，而是生存的必要条件。
"If liberty means anything at all, it means the right to tell people what they do not want to hear."
如果自由有任何意义的话，那就是告诉人们他们不想听的事情的权利。
The only real mistake is the one from which we learn nothing.
现实与幻觉之间的界限常常模糊不清。