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Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
When I sing, I feel like I’m in a different world, a world where anything is possible.
学习是系统中产生的任何变化,这些变化或多或少会永久性地改变其适应环境的能力。
The greatest danger is not that we will lose our way, but that we will become content with where we are.