‘In our Party, we Leninists are the 𝘴𝘰𝘭𝘦 Lefts without quotation marks.

Consequently, we Leninists are neither "Lefts" nor Rights in our own Party.

We are a party of Marxist-Leninists.

And within our Party we combat not only those whom we call openly opportunist deviators, but also those who pretend to be "Lefter" than Marxism, "Lefter" than Leninism, and who camouflage their Right, opportunist nature with high-sounding "Left" phrases.’

• J. V. Stalin

Source: “Industrialisation of the country and the Right Deviation in the C.P.S.U (B.) - III. Combating Deviations and Conciliation Towards Them.” (Speech Delivered at the Plenum of the C.P.S.U.(B.), November 19, 1928. Works, Volume 11, pp. 280-303)