Experto crede: aliquid amplius invenies in silvis, quam in libris. Ligna et lapides docebunt te, quod a magistris audire non possis. Believe me, you will find more lessons in the woods than in books. Trees and stones will teach you what you cannot learn from masters.
—Bernard of Clairvaux
I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived.
Henry David Thoreau