数学中最重要的是理解概念，而不仅仅是记忆公式。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
The brain is a naturally selected information processor.
Never underestimate the power of small, consistent improvements.
流放不是一个地方，而是一种你随身携带的心态。
煤炭的未来在于清洁高效利用。
心灵的主要任务是为行动组织经验。