The Germania (Latin: De Origine et situ Germanorum, literally Concerning the Origin and Situation of the Germanics), written by Gaius Cornelius Tacitus around 98, is an ethnographic work on the Germanic tribes outside the Roman Empire.

The Germania begins with a description of the lands, laws, and customs of the Germanic people (Chapters 1–27); it then segues into descriptions of individual tribes, beginning with those dwelling closest to Roman lands and ending on the uttermost shores of the Baltic, among the amber-gathering Aesti, the primitive and savage Fenni, and the unknown tribes beyond them.

Tacitus says (Ch. 2) that physically, the Germans appeared to be a distinct nation, not an admixture of their neighbors, as nobody would desire to migrate to a climate as horrid as Germany's. They are divided into three large branches, the Ingaevones, the Herminones and the Istaevones, deriving their ancestry from three sons of Mannus, son of Tuisto, their common forefather. In Chapter 4, he mentions that they all have common physical characteristics, blue eyes (truces et caerulei oculi = "sky-coloured, azure, dark blue, dark green), reddish hair ( rutilae comae = "red, golden-red, reddish yellow") and large bodies, vigorous at the first onset but not tolerant of exhausting labour, tolerant of hunger and cold but not of heat.

Germania (Greek: Γερμανία) was the Greek and Roman geographic term for the geographical regions inhabited mainly by peoples considered to be Germani. It was most often used to refer especially to the east of the Rhine and north of the Danube. The areas west of the Rhine were mainly Celtic (specifically Gaulish) and had become part of the Roman Empire.

Some Germani, perhaps the original people to have been referred to by this name, had lived on the west side of the Rhine. At least as early as the 2nd century BC. This area was considered to be in "Gaul", and became part of the Roman empire. These were the so-called germani cisrhenani, who in modern terms lived in the region of modern eastern Belgium, the southeastern Netherlands, and stretching into Germany towards the Rhine. During the period of the Roman empire, more tribes were settled in areas of the empire near the Rhine, in territories controlled by the Roman Empire. Eventually these areas came to be known as Lesser Germania, while Greater Germania (Magna Germania) was the larger territory east of the Rhine.

A book is a set of written, printed, illustrated, or blank sheets, made of ink, paper, parchment, or other materials, usually fastened together to hinge at one side. A single sheet within a book is called a leaf, and each side of a leaf is called a page. A book produced in electronic format is known as an electronic book (e-book).

Books may also refer to works of literature, or a main division of such a work. In library and information science, a book is called a monograph, to distinguish it from serial periodicals such as magazines, journals or newspapers. The body of all written works including books is literature. In novels and sometimes other types of books (for example, biographies), a book may be divided into several large sections, also called books (Book 1, Book 2, Book 3, and so on). A lover of books is usually referred to as a bibliophile or, more informally, a bookworm.

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