World
The world is the planet Earth and all life upon it, including human civilization. In a philosophical context, the "world" is the whole of the physical Universe, or an ontological world (the "world" of an individual). In a theological context, the world is the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred spheres. "End of the world" scenarios refer to the end of human history, often in religious contexts.
World
This world surely is wide enough to hold both thee and me.
Laurence Sterne, The Life and Opinions of Tristram Shandy, Gentleman (1760-1767), Book II, Chapter XII; reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 911-17.