In Group Psychology and the Analysis of the Ego, (1922), Sigmund Freud based his preliminary description of group psychology on Le Bon's work, but went on to develop his own, original theory, related to what he had begun to elaborate in Totem and Taboo. Theodor Adorno reprised Freud's essay in 1951 with his Freudian Theory and the Pattern of Fascist Propaganda, and said that "It is not an overstatement if we say that Freud, though he was hardly interested in the political phase of the problem, clearly foresaw the rise and nature of fascist mass movements in purely psychological categories.

The Interpretation of Dreams (German: Die Traumdeutung) is a book by psychoanalyst Sigmund Freud. The book introduces Freud's theory of the unconscious with respect to dream interpretation, and also first discusses what would later become the theory of the Oedipus complex. Freud revised the book at least eight times and, in the third edition, added an extensive section which treated dream symbolism very literally, following the influence of Wilhelm Stekel. Freud said of this work, "Insight such as this falls to one's lot but once in a lifetime."

Introduction to Psychoanalysis (German: Vorlesungen zur Einführung in die Psychoanalyse) is one of the most famous works of Sigmund Freud, calculated for a wide readership. In its first part (from 1st to 28th lecture) Freud enthusiastically outlines his approach to the unconscious, dreams, the theory of neuroses and some technical issues in the form in which it was formulated at the time of reading the lectures in Vienna in 1916-1917. From some positions outlined here Freud subsequently refused, many supplements and develops or revises in his later works. The second part ("new lecture series, from 29th to 35th) has never been read before to public, it features a different style of presentation, sometimes requiring the reader to training, sometimes polemical.

This book contains a selection of articles and pamphlets on analytical psychology written at intervals during the past fourteen years. These years have seen the development of a new discipline, and as is usual in such a case, have involved many changes of view-point, of concept, and of formulation.

It is not my intention to give a presentation of the fundamental concepts of analytical psychology in this book; it throws some light, however, on a certain line of development which is especially characteristic of the Zürich School of psychoanalysis.

In war time it is a crime to hoard food, and fines and impris-onment have followed the exposé of such practices. Yet there are hundreds of thousands of individuals all over America who are hoarding food, and that one of the most precious of all foods! They have vast amounts of this valuable commodity stored away in their own anatomy.

Sincerely do I hope that the issue of this little book may prove useful in drawing the attention of the public to the mental and physical condition of the unfortunates who form such a large proportion of our prison population.

To our authorities the sad plight of this mass of smitten humanity is well known. Year after year our Prison Commissioners, in presenting their reports, have not failed to impress upon the State the great part physical and mental afflictions play in the production of crime.

PSYCHOLOGY is generally considered to be the science of mind, although more properly it is the science of mental states—thoughts, feelings, and acts of volition. It was formerly the custom of writers on the subject of psychology to begin by an attempt to define and describe the nature of mind, before proceeding to a consideration of the subject of the various mental spates and activities. But more recent authorities have rebelled against this demand, and have claimed that it is no more reasonable to hold that psychology should be held to an explanation of the ultimate nature of mind than it is that physical science be held to an explanation of the ultimate nature of matter.

Micrographia is a historic book by Robert Hooke, detailing the then thirty-year-old Hooke's observations through various lenses. Published in September 1665, the first major publication of the Royal Society, it was the first scientific best-seller, inspiring a wide public interest in the new science of microscopy. It is also notable for coining the biological term cell.
Observations:
Hooke most famously describes a fly's eye and a plant cell (where he coined that term because plant cells, which are walled, reminded him of a monk's quarters). Known for its spectacular copperplate engravings of the miniature world, particularly its fold-out plates of insects, the text itself reinforces the tremendous power of the new microscope. The plates of insects fold out to be larger than the large folio itself, the engraving of the louse in particular folding out to four times the size of the book. Although the book is best known for demonstrating the power of the microscope, Micrographia also describes distant planetary bodies, the wave theory of light, the organic origin of fossils, and various other philosophical and scientific interests of its author.

The Ego and Its Own is an 1844 work by German philosopher Max Stirner. It presents a radically nominalist and individualist critique of, on the one hand, Christianity, nationalism and traditional morality, and on the other, humanism, utilitarianism, liberalism and much of the then-burgeoning socialist movement, advocating instead an amoral egoism.

In his later work, Freud proposed that the human psyche could be divided into three parts: Id, ego and super-ego. Freud discussed this model in the 1920 essay Beyond the Pleasure Principle, and fully elaborated upon it in The Ego and the Id (1923), in which he developed it as an alternative to his previous topographic schema.