See

To speak truly, few adult persons can see nature.
Most persons do not see the sun.
At least they have a very superficial seeing.
The sun illuminates only the eye of the man,
but shines into the eye and heart of the child.
The lover of nature is he whose
inward and outward senses are still truly adjusted to each other;
who has retained the spirit of infancy
even into the era of manhood.
~Ralph Waldo Emerson~