"One of the most frequently mentioned equations was Euler's equation, e^{i \pi} + 1 = 0. \,\! Respondents called it "t…"

"Like a Shakespearean sonnet that captures the very essence of love, or a painting that brings out the beauty of the h…"

"There is a famous formula, perhaps the most compact and famous of all formulas — developed by Euler from a discovery …"

"Gentlemen, that is surely true, it is absolutely paradoxical; we cannot understand it, and we don't know what it mean…"

"This most extraordinary equation first emerged in Leonard Euler’s Introductio in 1748."

"Since high school I have been utterly fascinated by the “mystery” of i = \sqrt{-1} and by the beautiful calculations …"

"-1 = e^iπ, proves that Euler was a sly guy."

"This is as I have said in my Arithmetic:—The area of a circle is equal to the product of the circumference by one-fou…"

"Multiply the arc by the square of the arc, and take the result of repeating that [any number of times]. Divide [each …"

"The method represents a best approximation algorithm of minimal length that, owing to several minimization properties…"