Leonhard Euler

Leonhard Euler was a pioneer among pioneers, and his chart tells you so at a glance. His Sun sits in Aries, the first and leading sign, the self-starter, the one who gets up on the saddle no matter what the universe throws down and casts light that leaves a lasting mark wherever it falls. This is the warrior-mathematician who charged into unexplored country and simply built the roads: he founded graph theory and topology, cracked the Basel problem that had defeated everyone for 150 years by finding that the reciprocals of the squares sum exactly to pi squared over six, and gave us the very language we still write in, the function notation f(x), the constant e, the summation sigma, and the Greek pi. With 866 publications, he remains the most prolific in history; Laplace simply said, read Euler, he is the master of us all.

His Moon rests in Libra, a beautiful, Venusian Moon that finds peace through harmony, balance and symmetry, and there is a real elegance to how he mothered his ideas into order, forever putting things on the scale until they came out fair and clean. An Aries fire that seeks Libran beauty: the courage to be first, wedded to the longing to make it elegant.