Aries is the first Sign of the Zodiac:

Aries is the first Sign of the Zodiac. It represents birth and the first realization of Self. Aditionally, because it represents the beginning of the Astrological year, people born under this Sign like to get things started. They tend to display strong leadership, and their extroverted and assertive natures let them lead off the new cycle eagerly. They are the pioneers of the Zodiac, tramping courageously into the wilderness. Aries is the Sign of new beginnings. They are dynamic and active, as befits the beginning of the Astrological cycle.