凡学之不勤、必其志未笃也。
释义:求学之人若不勤奋,必然是其志向不坚定。
任何圆的面积等于一个直角三角形,其中一条直角边等于半径,另一条等于圆的周长。
The canvas is a battleground between control and chaos.
In mathematics, the art of proposing a question must be held of higher value than solving it.
The soul is like an uninhabited world that comes to life only when God lays His head against us.