The only thing standing between you and your goal is the story you keep telling yourself as to why you can't achieve it.
如果你想在数学上取得进步,你必须习惯于不舒服。
电子特性可以受到拓扑保护的认识彻底改变了我们对固态物理学的理解。
However difficult life may seem, there is always something you can do and succeed at.