La verdadera pasión no conoce límites ni obstáculos.
真正的热情不知道限制或障碍。
圆的周长大于任何内接等边多边形的周长，小于任何外切多边形的周长。
The most important single aspect of software development is to be clear about what you are trying to build.
Customer trust is hard to earn and easy to lose—guard it fiercely.
Modern quarrying must marry the wisdom of geology with the innovation of engineering.
The writer must be a defender of the marginal, the forgotten, the defeated.