“We call the wise age that in which men had a wonderful knowledge of science which we recognize without fail by certain signs, although without knowing who they were, or in what place, or when. …It has become a matter of common usage to call the barbarous age that time which extends from about 900 or a thousand years up to about 150 years past, since men were for 700 or 800 years in the condition of imbeciles without the practice of letters or sciences—which condition had its origin in the burning of books through troubles, wars, and destructions; afterwards affairs could, with a great deal of labor, be restored, or almost restored, to their former state; but although the afore-mentioned preceding times could call themselves a wise age in respect to the barbarous age just mentioned, nevertheless we have not consented to this definition of such a wise age, since both taken together are nothing but a true barbarous age in comparison to that unknown time at which we state that it [i. e., the wise age] was, without any doubt, in existence.”

“Can any rational person believe that the Bible is anything but a human document? We now know pretty well where the various books came from, and about when they were written. We know that they were written by human beings who had no knowledge of science, little knowledge of life, and were influenced by the barbarous morality of primitive times, and were grossly ignorant of most things that men know today.”

“Nights without beginning that had no end. Talking about a past as if it'd really happened. Telling themselves that this time next year, this time next year, things were going to be different.”

“Men who had made five thousand, year before last, and ten thousand last year, were urging on nerve-yelping bodies and parched brains so that they might make twenty thousand this year; and the men who had broken down immediately after making their twenty thousand dollars were hustling to catch trains, to hustle through the vacations which the hustling doctors had ordered.”

“It is impossible to read the works of the economists who since the time of Smith have endeavored to build up and elucidate the science of political economy without seeing how, over and over again, they stumble over the law of wages without once recognizing it. Yet, "if it were a dog it would bite them!" Indeed, it is difficult to resist the impression that some of them really saw this law of wages, but, fearful of the practical conclusions to which it would lead, preferred to ignore and cover it up, rather than use it as the key to problems which without it are so perplexing. A great truth to an age which has rejected and trampled on it, is not a word of peace, but a sword!”

“There is something which unites magic and applied science while separating both from the wisdom of earlier ages. For the wise men of old the cardinal problem had been how to conform the soul to reality, and the solution had been knowledge, self-discipline, and virtue. For magic and applied science alike the problem is how to subdue reality to the wishes of men.”

“Thus we may found the science for the study of the life of signs against the background of social life; it would form part of social psychology, and consequently of general psychology; we shall call it semiology (from Greek sēmeion — 'sign'). That science would explain to us in what signs consist of and by what laws they are governed. Since it is a science which does not yet exist, we do not know what it will be like; it has, however, a reason for its existence, its place is allocated in advance. Linguistics is only a part of that general science; the laws which semiology will discover, will be applicable also to linguistics, which in turn will be linked with a domain clearly defined throughout the entirety of human affairs.”

“Now as we call every thing [custom], which proceeds from a past repetition, without any new reasoning or conclusion, we may establish it as a certain truth, that all the belief, which follows upon any present impression, is deriv'd solely from that origin.”

“Natural science served as - if we overlook the hasty identification of mind and matter which had its origin in natural science - as a shining and fruitful example to psychology.”

“It goes without saying that the normal durability of fixed capital is calculated on the supposition that all the conditions under which it can perform its functions normally during that time are fulfilled, just as we assume, in placing a mans life at 30 years on the average, that he will wash himself.”