The square root of 69 is 8(ate) som'

The square root of I is I.

— Vladimir Nabokov

The square root of nothing.

— R. D. Laing

Square root of a cosine? How is that ever going to be useful?

— Aprilynne Pike

Speaking of human computers, there is a guy named Art Benjamin, he's a human calculator. He says it's a skill he learned as a…

— Bill Nye

I met a man once who told me that far from believing in the square root of minus one, he didn't believe in minus…

— Edward Charles Titchmarsh

Irrationality is the square root of all evil

— Douglas Hofstadter

Programming graphics in X is like finding the square root of PI using Roman numerals.

— Henry Spencer

How can you shorten the subject? That stern struggle with the multiplication table, for many people not yet ended in victory, how can you…

— Stephen Leacock

If I can't get people to commit themselves on whether or not there is a square root of two, then I won't touch on…

— Tom Lehrer

Vancouver is the square root of negative one. Technically it shouldn't exist, but it does. I can't imagine living anywhere else.

— Douglas Coupland

Is the square root of hate the same thing as love times love?

— Eugene Mirman

The human brain finds it extremely hard to cope with a new level of abstraction. This is why it was well into the eighteenth…

— Keith Devlin

But think of Adam and Eve like an imaginary number, like the square root of minus one: you can never see any concrete proof…

— Philip Pullman

I had long since given up trying to extract from a woman as it were the square root of her unknown quantity, the mystery…

— Marcel Proust

No one fully understands spinors. Their algebra is formally understood but their general significance is mysterious. In some sense they describe the 'square root'…

— Michael Atiyah