The beauty of mathematics lies in its simplicity and universality.
当儿童还没有发展起控制能力的时候,“让儿童想干什么就干什么”是与自由观念相违背的。
每一项科学发现都应该以其对人类福祉的贡献来衡量。
Literature is the bridge between the visible and the invisible, the spoken and the unspoken.