Which quote best states thoreau’s purpose behind writing walden?

“however mean your life is, meet it and live it; do not shun it and call it hard names.”

“i see far inland the banks which the stream anciently washed, before science began to record its freshets.”

“i wanted to live deep and suck out all the marrow of life, to live so sturdily and spartanlike as to put to rout all that was not life. . ”

“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. . ”