Today is Leonhard Euler‘s 306th birthday! As Pierre-Simon Laplace said, “Read Euler, read Euler, he is the master of us all.” A true polymath, he pioneered in mechanics, fluid dynamics, optics, and astronomy. We have him to thank for much of our modern mathematical notational conventions, as well as infinitesimal calculus and graph theory. Euler’s Identity is considered by many to be the most beautiful equation in all of mathematics. So join me in wishing a happy birthday to one of the most influential dead mathematicians of all time.