一本书是一面镜子：如果傻瓜往里看，智者也无法从中看出什么。

The brain is still forming in our 20s, which means it's more open to change.

It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.

第一个错误的假设是质量意味着好、奢华、闪亮或重量。