From the smallest necessity to the highest religious abstraction, from the wheel to the skyscraper, everything we are and everything we have comes from one attribute of man - the function of his reasoning mind.

Even if smog were a risk to human life, we must remember that life in nature, without technology, is wholesale death.

to rest one's case on faith means to concede that reason is on the side of one's enemies- that one has no rational arguments to offer.

Man’s rights can be violated only by the use of physical force. It is only by means of physical force that one man can deprive another of his life, or enslave him, or rob him, or prevent him from pursuing his own goals, or compel him to act against his own rational judgment.

A free mind and a free market are corollaries.

i cannot be called upon to know a negative or to prove a negative. if there is a god and you prove it, that's fine. but you don't tell me you can't know that there isn't. i would say yes i know there isn't because i have been given no evidence.

Sacrifice does not mean the rejection of the worthless, but of the precious