"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."
"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."
"Only that day dawns to which we are awake. There is more day to dawn. The sun is but a morning star."
"Things do not change; we change."
"As if you could kill time without injuring eternity."
"The cost of a thing is the amount of what I will call life which is required to be exchanged for it, immediately or in the long run."