数学的本质在于它的自由。
乳制品行业必须不断发展，以满足消费者不断变化的需求。
"Beauty is a form of genius—is higher, indeed, than genius, as it needs no explanation."
The only way to know if something is art is to see if it changes the way you think.
艺术应该挑战、激发并让人们思考。