数学是关于概念之间关系的科学,与这些概念的内容无关。
如果你不能保持灵活的思路,就会抓狂,忽视解决问题的其他可能性。
The house should be the treasure chest of living.
I think the most important thing is to be honest with yourself and with others.
Thank you music for making my life so wonderful.
Every moment is a fresh beginning.