File:Descending salvation.svg

Summary
"The furca, or fork, a mediaeval symbol for the Trinity, is also a Pythagorean emblem of the course of life, in the form of a rising path with fork roads to Good and Evil. This sign is very ancient in origin... The fork... has a further meaning, namely, the expectant soul, man gazing aloft with outstretched arms. The same sign, inverted, in contrast with the previous sign, expresses salvation descending from above and spreading over the world below."

- Rudolph Koch