The more you learn, the more you know that you know nothing.

I know not if this earth on which I stand is the core of the universe or if it is but a speck of dust lost in eternity. I know not and I care not. For I know what happiness is possible to me on earth. And my happiness needs no higher aim to vindicate it. My happiness is not the means to any end. It is the end. It is its own goal. It is its own purpose.

He despised causeless affection, just as he despised unearned wealth. They professed to love him for some unknown reason and they ignored all the things for which he could wish to be loved.

I am older than you. Believe me, there is no other way to live on earth. Men are not open to truth or reason. They cannot be reached by a rational argument. The mind is powerless against them. Yet we have to deal with them. If we want to accomplish anything, we have to deceive them into letting us accomplish it. Or force them. They understand nothing else. We cannot expect their support for any endeavor of the intellect, for any goal of the spirit. They are nothing but vicious animals. They are greedy, self-indulgent, predatory dollar-chasers

The only proper, moral purpose of a government is to protect man's rights, which means: to protect him from physical violence - to protect his right to his own life, to his own liberty, to his own property and to the pursuit of his own happiness. Without property rights, no other rights are possible.

Individual rights are the means of subordinating society to moral law.

Freedom of association includes the freedom not to associate.