'Kant ought to be arrested and given three years in Solovki asylum for that "proof" of his!' Ivan Nikolayich burst out completely unexpectedly. 'Ivan!' whispered Berlioz, embarrassed. But the suggestion to pack Kant off to an asylum not only did not surprise the stranger but actually delighted him. 'Exactly, exactly!' he cried and his green left eye, turned on Berlioz glittered. 'That's exactly the place for him! I said to him myself that morning at breakfast: "If you'll forgive me, professor, your theory is no good. It may be clever but it's horribly incomprehensible. People will think you're mad."' Berlioz's eyes bulged. At breakfast... to Kant?

Book One in 'Never Talk to Strangers', MG, here Woland, Berlioz and Ivan are talking about Kant's views on existence of God - The Master and Margarita (1967)