抬起头来，上帝把最艰难的战斗交给他最坚强的战士。
Keep your head up, God gives his hardest battles to his strongest soldiers.
The speed of learning determines the speed of growth in the digital economy.
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
"You can call me artist, you can call me idol, or any other thing you want. I don’t care, I’m proud of it."