As I've stated before, learning astrology will help you respect the balance of masculine and feminine energies throughout nature. In astrology every sign has a sign that sits 180 degrees on the opposite side of the zodiac wheel. These signs pull energy from one another but represent the opposite energy . For example, Aries represents the self and is sitting 180 degrees from Libra which is the sign of partnerships. Aries, a masculine fire sign which represents the emotion of this opposition and Libra a masculine air sign which represents the intellect of this opposition. Each opposition has a balance of emotion and intellect operating from the same polarity. A lot of people consider opposite signs as "sister" signs but id beg to differ.
The way that I view "sister" signs are the signs that share the same classical ruling planet . For example Taurus and Libra are both ruled by Venus. Taurus being the feminine sign of Venus and Libra the Masculine. Another example of a sister sign is Aries ruled by mars and scorpio who is classically ruled by mars. Aries being the masculine side of mars and scorpio being the feminine. I call them "sibling" signs because one is masculine (brother) and the other feminine (sister).
The sibling signs of Aries and Scorpio are the opposite signs of the sibling signs for Taurus and Libra showing the mars and Venus planetary opposition. This dynamic shows that the opposition of the planets posses each element . Aries (fire), Scorpio (water), Libra (air) and Taurus (Earth). This Pattern can be found throughout the other two planetary oppositions, Mercury opposing Jupiter, and the sun/moon opposing Saturn.