不读书的人并不比不识字的人强。
The man who does not read has no advantage over the man who cannot read.
The mind is everything. What you think, you become.
如果不是我，那会是谁？如果不是现在，那是什么时候？
Challenges are opportunities in disguise; embrace them with courage and wisdom.
Every word is a step towards understanding.
我们认为正确的事情有时会被证明是错误的，而我们认为是错误的事情有时会被证明是正确的。
Your self-worth is determined by you. You don’t have to depend on someone telling you who you are.
在数学中，没有捷径可走。