心是脆弱的东西，容易破碎但难以修复。
The heart is a fragile thing, easily broken but hard to mend.
Great companies are built on great cultures, not just great products.
The AdS/CFT correspondence is a powerful tool for understanding quantum gravity.
In the quest for understanding the cosmos, every question answered leads to a dozen more.
Great companies are built on great products and even greater people.