Quotation

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Euler’s identity is the “To be or not to be” of mathematics, the most famous line in the oeuvre and a piece of cultural heritage that resonates beyond its field: e^iπ + 1 = 0

...The equation is mind-blowing. It cleanly unites the five most important numbers in math: 1, the first counting number; 0, the abstraction of nothing; π, the ratio of a circle’s circumference to its diameter; e, the exponential constant; and i, the square root of minus one.