数学的本质在于它的自由。
The essence of mathematics lies in its freedom.
Quality should never be compromised for the sake of short-term profits.
I'm obsessed with reinvention, I'm obsessed with being a warrior for love.
教育的回报太遥远,而今天的生计太紧迫。
永远不要低估设计和执行中简洁的力量。