The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
我是一个非常冷静的人。这有助于我在网球和生活中的表现。
【解释】人常常在忧患困苦中,才能磨练意志,增长才干。
The best books are the ones that children want to read again and again.
I'm not arrogant, I'm just better than everyone else.