yin and yang
"Yin and Yang are like two sides of the same coin - one cannot exist without the other,just as without female there can be no male"
"~Yin and Yang are like two rivers constantly meeting, one side continually changing into and becoming the other~"
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.