过去是我们背负的负担，以我们无法总是理解的方式塑造我们的现在和未来。
"The past is a burden we carry with us, shaping our present and future in ways we cannot always understand."
"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。
Never be satisfied with current achievements, always aim higher.
The best way to predict the future of our forests is to create it through responsible management.
密码学的目标是使破解系统的成本超过受保护信息的价值。
