There are no contradictions. If you find one, check your premises.

You have chosen to risk your lives for the defense of this country. I will not insult you by saying that you are dedicated to selfless service--it is not a virtue in my morality. In my morality, the defense of one's country means that a man is personally unwilling to live as the conquered slave of any enemy, foreign or domestic. This is an enormous virtue.

If some men are entitled by right to the products of the work of others, it means that those others are deprived of rights and condemned to slave labor.

In order to live, man must act; in order to act, he must make choices; in order to make choices, he must define a code of values; in order to define a code of values, he must know what he is and where he is – i.e. he must know his own nature (including his means of knowledge) and the nature of the universe in which he acts – i.e. he needs metaphysics, epistemology, ethics, which means: philosophy. He cannot escape from this need; his only alternative is whether the philosophy guiding him is to be chosen by his mind or by chance.

If a man speculates on what 'society' should do for the poor, he accepts thereby the collectivist premise that men's lives belong to society and that he, as a member of society, has the right to dispose of them...that psychological confession reveals the enormity of the extent to which altruism erodes men's capacity to grasp the concept of rights or the value of an individual life.

A viler evil than to murder a man, is to sell him suicide as an act of virtue.

If you know that this life is all that you have, wouldn't you make the most of it?