the.com/source
Where everything begins and where every argument goes to die.
means The place, person, thing, or document from which something originates, flows, or can be verified.
from From Old French 'sourse' or 'sors,' meaning a spring or fountainhead — literally the spot where water rises from the ground. That word is the feminine past participle of 'sourdre,' to rise or spring up, which traces back to Latin 'surgere,' 'to rise' (the same root that surges through 'surge' and 'resurrection'). So a source was first a literal wellspring; only later did the word flow downhill into rivers of meaning — the origin of rumors, rivers, and citations alike.
latin rootFrom surgere, to rise, like a spring from earth
journalismReporters jail rather than reveal one
open secretOpen source code runs most of the internet
riversA river's source is often a humble trickle
physicsEvery wave needs a source to exist