"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…"

"For any real number x, Euler’s formula is"

"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 …"

"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…"