This work argues that common representations share "pictorial form" and that a fact is a "state of affairs," as part of its claim that thoughts and propositions are pictures.  
One theory presented in this book was inspired by a magazine article about how a car accident was modeled in a Paris courtroom.   This work makes a distinction between a proposition showing its sense and it saying how things are. This work argues that common representations share "pictorial form" and that a fact is a "state of affairs," as part of its claim that thoughts and propositions are pictures.  The sixth section of this work presents the "general form of proposition" and argues that propositions of logic are tautologies, and thus meaningless.  The structure of this work is built around seven aphorisms, the first of which is "the world is all that is the case" and the final that "what we cannot talk about we must pass over in silence." Later repudiated in its author's Philosophical Investigations, for 10 points, name this first and major work of Ludwig Wittgenstein.
One theory presented in this book was inspired by a magazine article about how a car accident was modeled in a Paris courtroom.   
Tractatus Logico-Philosophicus [accept Logical-Philosophical Treatise or other reasonable translations]