Here are the opening lines of four books that are important. For each, I have provided a link for a free download of the book.
How selfish soever man may be supposed, there are evidently some principles in his nature, which interest him in the fortune of others, and render their happiness necessary to him, though he derives nothing from it except the pleasure of seeing it. Of this kind is pity or compassion, the emotion which we feel for the misery of others, when we either see it, or are made to conceive it in a very lively manner. That we often derive sorrow from the sorrow of others, is a matter of fact too obvious to require any instances to prove it; for this sentiment, like all the other original passions of human nature, is by no means confined to the virtuous and humane, though they perhaps may feel it with the most exquisite sensibility. The greatest ruffian, the most hardened violator of the laws of society, is not altogether without it.
The Theory of Moral Sentiments by Adam Smith 1759
The annual labour of every nation is the fund which originally supplies it with all the necessaries and conveniences of life which it annually consumes, and which consist always either in the immediate produce of that labour, or in what is purchased with that produce from other nations.
According therefore as this produce, or what is purchased with it, bears a greater or smaller proportion to the number of those who are to consume it, the nation will be better or worse supplied with all the necessaries and conveniences for which it has occasion.
An Inquiry into the Nature and Causes of the Wealth of Nations by Adam Smith 1776
If we look beneath the surface of our public affairs, we can discern one fundamental fact, namely: a great redistribution of power between society and the State. This is the fact that interests the student of civilization. He has only a secondary or derived interest in matters like price-fixing, wage-fixing, inflation, political banking, “agricultural adjustment,” and similar items of State policy that fill the pages of newspapers and the mouths of publicists and politicians. All these can be run up under one head. They have an immediate and temporary importance, and for this reason they monopolize public attention, but they all come to the same thing; which is, an increase of State power and a corresponding decrease of social power.
Our Enemy, the State by Albert Jay Nock 1935
Individuals have rights and there are things no person or group may do to them (without violating their rights). So strong and far-reaching are these rights that they raise the question of what, if anything, the state and its officials may do. How much room do individual rights leave for the state?
Anarchy, State and Utopia by Robert Nozick 1974