. The same is true for "difficulty". Facing a cliff, you won't be able to see a crack in it for a hundred years, but with an axe, you can advance inch by inch, and you have to advance foot by foot, and keep accumulating. , the leap will come, and the breakthrough will follow. ---Hua Luogeng (China)

Knowledge is the vast sea, but creation is a clear and sweet spring of wisdom that pours into the sea.

Career is accomplished by hard work, but wasteful by play; success is achieved by thinking, and destroyed by casualness - Han Yu