Henry David Thoreau

... We are constantly invited to be who we are.
... You must live in the present, launch yourself on every wave, find your eternity in each moment.
... Why should we live with such hurry and waste of life...When we are unhurried and wise, we perceive that only great and worthy things have any permanent and absolute existence, that petty fears and petty pleasures are but the shadow of the reality.
... 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. I did not wish to live what was not life, living is so dear; nor did I wish to practice resignation, unless it was quite necessary.