Happiness is not something ready made. It comes from your own actions.
伽罗瓦表示的研究是进入数学隐藏对称性的旅程。
成人必须了解,儿童需要运用双手,并认同儿童第一次运用双手时,只是工作本能的展现。
"Children understand visual storytelling instinctively."
Some people don’t like change, but you need to embrace change if the alternative is disaster.