two is the heaven & the earth
&
sun & moon
male & female
Jacob & Esau
Leah & Rachel
Hillel & Shammai
R. Yochanan & Resh Lakish
black & white
2 dots make a line, but I did not know if it was a horizontal line, implying equality, or a vertical line, implying hierarchy. There is a tension within a relationship of two, they oppose, one can dominate the other - oscillating between the horizontal and the vertical modes, hence the diagonal line.
