Sentence examples similar to it is not easy to refute from inspiring English sources

It isn't easy to refute a strongly confirmed theory.

It is not easy.

It isn't easy.

And the track record makes that not easy to refute.

"It's not easy".

It was not easy.

It wasn't easy.

It is not to rebut, refute, or refuse to accept.

Sorry, I keep astonishing myself whenever I think of it, because it is just so easy to refute.

Life is not easy.

"Simple is not easy.