The people are the government, administering it by their agents; they are the government, the sovereign power.
Sustainability is not just a trend, it's a responsibility we owe to future generations.
Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.
一个人知道自己为什么而活,就可以忍受任何一种生活。
Every problem in mathematics is an opportunity to learn something new.