“Four things a man must learn to do
If he would make his record true:
To think without confusion clearly;
To love his fellow-men sincerely;
To act from honest motives purely;
To trust in God and Heaven securely.”

Source: Light in August (1932), Chapter 2

Assessing St. Augustine's perspectives in "Augustus to Augustine", p. 37
Forewords and Afterwords (1973)
Context: Man … always acts either self-loving, just for the hell of it, or God-loving, just for the heaven of it; his reasons, his appetites are secondary motivations. Man chooses either life or death, but he chooses; everything he does, from going to the toilet to mathematical speculation, is an act of religious worship, either of God or of himself.
Lastly by the classical apotheosis of Man-God, Augustine opposes the Christian belief in Jesus Christ, the God-Man. The former is a Hercules who compels recognition by the great deeds he does in establishing for the common people in the law, order and prosperity they cannot establish for themselves, by his manifestation of superior power; the latter reveals to fallen man that God is love by suffering, i. e. by refusing to compel recognition, choosing instead to be a victim of man's self-love. The idea of a sacrificial victim is not new; but that it should be the victim who chooses to be sacrificed, and the sacrificers who deny that any sacrifice has been made, is very new.

In the Belly of the Beast (1981)

Credo (1965)
Context: I believe that none can "save" his fellow man by making a choice for him. To help him, he can indicate the possible alternatives, with sincerity and love, without being sentimental and without illusion. The knowledge and awareness of the freeing alternatives can reawaken in an individual all his hidden energies and put him on the path to choosing respect for "life" instead of for "death."

King v. Waddington (1800), 1 East, 158.

Ch. 1 : The Foundations of Liberal Policy § 11 : The Limits of Governmental Activity http://mises.org/liberal/ch1sec11.asp
Liberalism (1927)
Context: A free man must be able to endure it when his fellow men act and live otherwise than he considers proper. He must free himself from the habit, just as soon as something does not please him, of calling for the police.

Source: Patriotism and Christianity http://en.wikisource.org/wiki/Patriotism_and_Christianity (1896), Ch. 17
Context: One free man will say with truth what he thinks and feels amongst thousands of men who by their acts and words attest exactly the opposite. It would seem that he who sincerely expressed his thought must remain alone, whereas it generally happens that every one else, or the majority at least, have been thinking and feeling the same things but without expressing them.
And that which yesterday was the novel opinion of one man, to-day becomes the general opinion of the majority.
And as soon as this opinion is established, immediately by imperceptible degrees, but beyond power of frustration, the conduct of mankind begins to alter.
Whereas at present, every man, even, if free, asks himself, "What can I do alone against all this ocean of evil and deceit which overwhelms us? Why should I express my opinion? Why indeed possess one? It is better not to reflect on these misty and involved questions. Perhaps these contradictions are an inevitable condition of our existence. And why should I struggle alone with all the evil in the world? Is it not better to go with the stream which carries me along? If anything can be done, it must be done not alone but in company with others."
And leaving the most powerful of weapons — thought and its expression — which move the world, each man employs the weapon of social activity, not noticing that every social activity is based on the very foundations against which he is bound to fight, and that upon entering the social activity which exists in our world every man is obliged, if only in part, to deviate from the truth and to make concessions which destroy the force of the powerful weapon which should assist him in the struggle. It is as if a man, who was given a blade so marvelously keen that it would sever anything, should use its edge for driving in nails.
We all complain of the senseless order of life, which is at variance with our being, and yet we refuse to use the unique and powerful weapon within our hands — the consciousness of truth and its expression; but on the contrary, under the pretext of struggling with evil, we destroy the weapon, and sacrifice it to the exigencies of an imaginary conflict'.

Source: The Liberty of Man, Woman and Child (1877)
Context: Only a few years ago there was a great awakening of the human mind. Men began to inquire by what right a crowned robber made them work for him? The man who asked this question was called a traitor. Others asked by what right does a robed hypocrite rule my thought? Such men were called infidels. The priest said, and the king said, where is this spirit of investigation to stop? They said then and they say now, that it is dangerous for man to be free. I deny it. Out on the intellectual sea there is room enough for every sail. In the intellectual air there is space enough for every wing.
The man who does not do his own thinking is a slave, and is a traitor to himself and to his fellow-men.

An Atheist Manifesto