The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
每一个结束都是一个新的开始。
The quality of an organization is determined by the quality of its products.
翻译:劳苦而不自我夸耀,有功绩而不自认为有功德,这是非常敦厚的态度。
We're here to put a dent in the universe. Otherwise why else even be here?