“A man receives only what he is ready to receive, whether physically or intellectually or morally…We hear and apprehend only what we already half know. If there is something which does not concern me, which is out of my line, which by experience or genius my attention is not drawn to, however novel and remarkable it may be, if it is spoken, we hear it not, if it is written we read it not, or if we read it, it does not detain us. Every man thus tracks himself through life, in all his hearing and reading and observation and travelling.”
-Thoreau