"The pursuit of knowledge is not just a journey of the mind, but also of the heart."
The past is a shadow, always following, but never catching up.
Time is an illusion. Lunchtime doubly so.
We are all haunted by the ghosts of our own making.
解释：河水成冰，不是一日的寒冷所致；积土成为高山，不是须臾的工夫就能完成。
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
Every step you take in the wild is a step towards understanding yourself better.