All truly great thoughts are conceived while walking.
我们现在看到的最错误的想法便是以为身体活动就只是身体活动而已,以为它不具有更高层次的功能,其实,心智的发展必然和身体动作相配合,而且是相互依赖存在的。
The concept of infinity is not just a mathematical abstraction, but a physical reality.