A proof is a device for convincing someone else that a mathematical statement is true.

The only way out is through.

The most dangerous phrase in business is 'we've always done it this way.'

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

每一本书都是一个待发现的世界，充满了惊喜和教诲。

I believe in the power of music to heal, to inspire, and to bring people together.

在绘本中，每一根线条和颜色都承载着意义——这是文字与图像之间的舞蹈。