There's not a liberal America and a conservative America - there's the United States of America.
我们不能一直用老方法做事。世界已经改变,我们也必须改变。
I’m playing against great players, playing against the best in the world. The competition – that’s what I’ve always wanted.
最好的科学家是那些永不停止问为什么的人。
Success is about enjoying the journey, not just the destination.