Η εξίσωση αυτή συνδέει τους με την μονάδα και το μηδέν, χρησιμοποιώντας πρόσθεση, πολλαπλασιασμό και ύψωση σε δύναμη.
Μερικά σχόλια για την εξίσωση αυτή:
"It is absolutely paradoxical; we cannot understand it, and we don't know what it means, but we have proved it, and therefore we know it must be the truth."
Benjamin Peirce
"Like a Shakespearean sonnet that captures the very essence of love, or a painting that brings out the beauty of the human form that is far more than just skin deep, Euler's equation reaches down into the very depths of existence."
Keith Devlin