But there's a fine line between individual genius and know-it-all arrogance.

"There's also a difference between comic genius and mental illness."

It is said that there is a balance between genius and insanity.

The difference between genius and ignorance is a degree of fear.

The line between genius and madness was thin enough at the best of times, and being dead probably didn't help.

In this context, a distinction can be made between the terms numen and genius.

When people speak of the borderline between genius and madness, why is it so evident what they mean?

He decided to contemplate the thin line between genius and derangement another time.

"There's a thin line between genius and madness," he said.

Everyone knows there is a narrow line between genius and madness.