The only way to learn mathematics is to do mathematics.
对于那样的人来说,时间是过剩的,是他们看着慢慢流干的桶。但实际上,他认为,它是你手中捧着的一滩发光的泥水;你应该用所有的精力去保护它。
不要害怕挑战,因为挑战让你成长。
Resilience is built through adversity, not in spite of it.