When Aries and Libra form a friendship, the inherent polarity of the Zodiac is invoked. Aries and Libra are opposite each other in the Zodiac, 180 degrees apart. Each Sign possesses what the other lacks, and when combined with Libra’s natural need for harmony, this is a relationship of great balance. The polarity of Aries and Libra can be defined as Self versus Other, but the differences go beyond that. Aries and Libra are impulsive versus indecisive, excitable versus peace-loving, willing to jump right in versus preferring a calm, smooth approach.