—— 请按键盘 空白键 开始游戏 ——

The AdS/CFT correspondence is a profound insight into the nature of reality, bridging the gap between quantum mechanics and general relativity.
You must not think that what is hard for you to master is humanly impossible; and if it is humanly possible, consider it to be within your reach.
今天对自由民主最严重的威胁不是来自共产主义或法西斯主义等敌对意识形态,而是来自内部——来自民粹主义的兴起和民主规范的侵蚀。