Henry David Thoreau had read "Nature" as a senior at Harvard College and took it to heart. It eventually became an essential influence for Thoreau's later writings, including his seminal Walden . In fact, Thoreau wrote Walden after living in a cabin on land that Emerson owned. Their longstanding acquaintance offered Thoreau great encouragement in pursuing his desire to be a published author. 
What is important about the verses written by the painter in sentence 1?
They “were original and not conventional.”
(1841) An essay by Ralph Waldo Emerson that advises the reader to “Trust thyself” and argues that “whoso would be a man must be a nonconformist.” It is the source of several well-known epigrams , such as “To be great is to be misunderstood” and “ A foolish consistency is the hobgoblin of little minds .”
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I hope in these days we have heard the last of conformity and consistency. Let the words be gazetted and ridiculous henceforward. Instead of the gong for dinner, let us hear a whistle from the Spartan fife. Let us bow and apologize never more. A great man is coming to eat at my house. I do not wish to please him; I wish that he should wish to please me. I will stand here for humanity, and though I would make it kind, I would make it true. Let us affront and reprimand the smooth mediocrity and squalid contentment of the times, and hurl in the face of custom and trade and office, the fact which is the upshot of all history, that there is a great responsible Thinker and Actor moving wherever moves a man; that a true man belongs to no other time or place, but is the center of things. Where he is, there is nature. He measures you and all men and all events. You are constrained to accept his standard. Ordinarily, every body in society reminds us of somewhat else, or of some other person. Character, reality, reminds you of nothing else; it takes place of the whole creation. The man must be so much that he must make all circumstances indifferent put all means into the shade. This all great men are and do. Every true man is a cause, a country, and an age; requires infinite spaces and numbers and time fully to accomplish his thought; and posterity seem to follow his steps as a procession. A man Caesar is born, and for ages after we have a Roman Empire. Christ is born, and millions of minds so grow and cleave to his genius that he is confounded with virtue and the possible of man. An institution is the lengthened shadow of one man; as, the Reformation, of Luther; Quakerism, of Fox; Methodism, of Wesley; Abolition, of Clarkson. Scipio , Milton called "the height of Rome;" and all history resolves itself very easily into the biography of a few stout and earnest persons.
Part of the challenge of self-reliance is that we have to rely on our own internal rules of what’s right and what’s wrong instead of relying on all of the cues given to us by society. Often, what society tells us to do – buy this product, work at this type of job, spend your free time watching television or shopping, and so on – is at odds with what it feels like we should be doing according to what our gut tells us.