生命短暂，珍惜每一刻。
Life is short, make every moment count.
It's not about the legs; it's about the heart and the mind.
译文：做好事就像登山一样艰难，做坏事就像山崩一样容易。
It is futile to demand an a priori proof of the existence of objects which are not immediately ‘given’.
实现明天理想的唯一限制是我们今天的疑虑。