The essence of mathematics lies in its freedom.
数学的本质在于它的自由。
The most successful states in the 21st century will be those that can combine the efficiency of markets with the fairness of democratic institutions.
"El pasado no es un lugar al que volver, sino una materia con la que construir."
最危险的毒药是成就感，解药是每晚思考明天如何做得更好。
Sustainability is not about doing less harm - it's about doing more good.
如果你想飞，就必须放弃拖累你的东西。
你无法预测，但你可以准备。