Hard work and perseverance will always pay off.
The study of mental processes requires both experimental and comparative methods.
真正的发现之旅不在于寻找新的风景,而在于拥有新的眼光。
你必须享受其中。如果你不开心,那有什么意义?
我不喜欢被一件事定义。我不仅仅是一个网球运动员。
I don't have to prove anything to anyone. I only have to follow my heart and concentrate on what I want to say to the world. I run my world.