Summary
This quote suggests that true appreciation and understanding of both nature and books can only be achieved by individuals who possess the ability to truly perceive their beauty and value. Merely having access to these resources is not enough; one must have the "eyes" or the capacity to deeply observe and appreciate what nature and books have to offer. It emphasizes the importance of actively engaging with and immersing oneself in these two realms, rather than just passively existing in their presence.