The World is Everything that Makes Up Reality

In philosophy, the World is everything that makes up reality. While clarifying the concept of world has arguably always been among the basic tasks of Western philosophy, this theme appears to have been raised explicitly only at the start of the twentieth century[5] and has been the subject of continuous debate. The question of what the world is has by no means been settled.
Parmenides
The traditional interpretation of Parmenides' work is that he argued that the every-day perception of reality of the physical world (as described in doxa) is mistaken, and that the reality of the world is 'One Being' (as described in aletheia): an unchanging, ungenerated, indestructible whole.
Plato
In his Allegory of the Cave, Plato distingues between forms and ideas and imagines two distinct worlds : the sensible world and the intelligible world.
Hegel
In Hegel's philosophy of history, the expression Weltgeschichte ist Weltgericht (World History is a tribunal that judges the World) is used to assert the view that History is what judges men, their actions and their opinions. Science is born from the desire to transform the World in relation to Man ; its final end is technical application.
Schopenhauer
The World as Will and Representation is the central work of Arthur Schopenhauer. Schopenhauer saw the human will as our one window to the world behind the representation; the Kantian thing-in-itself. He believed, therefore, that we could gain knowledge about the thing-in-itself, something Kant said was impossible, since the rest of the relationship between representation and thing-in-itself could be understood by analogy to the relationship between human will and human body.
Wittgenstein
Two definitions that were both put forward in the 1920s, however, suggest the range of available opinion. "The world is everything that is the case," wrote Ludwig Wittgenstein in his influential Tractatus Logico-Philosophicus, first published in 1922. This definition would serve as the basis...