儿童的进步不是取决于年龄,而是取决于能够自由地观看他周围的一切。
人的教育应该从出生开始,一直持续到死亡。
Mathematics is the language in which the universe writes its deepest secrets.
We are all walking around with an evolutionary user's manual in our heads, but most people don't realize it.
Never underestimate the power of a motivated team. They can achieve the impossible.