Iteration is the key to innovation. You have to keep refining and improving your ideas until they work.

When the gunpowder ignites, time stops.#当火药点燃的瞬间，时间就停止了。

For the best results with your children， spend only half the money you think you should， but double the time with them.

I was taught that the way of progress was neither swift nor easy.

教育是我们所有能力的和谐发展。