The key to innovation is not just to think outside the box, but to realize that the box itself is an illusion.

The stars shall fade away, the sun himself grow dim with age, and nature sink in years; but thou shalt flourish in immortal youth.

解读：学习知识、体悟智慧是个不断深入的过程，接触越多，越能发现未知领域广袤无垠，越深感自身渺小，激励持续求知探索。