数学是一种让我们能够描述无法描述的事物的语言。
你围绕你所恐惧的事物建立生活,然后你的一生都在恐惧中度过。
Quality is not an act, it is a habit that we must cultivate every day.
To study the mind is to study adaptation in action; every thought is a tool for living.
The truth is often hidden in the most ordinary places.