Genius and stupidity never stray from their respective paths; talent wanders to and fro, following every light.

Genius may have its limitations, but stupidity is not thus handicapped

The difference between genius and stupidity is that genius has its limits.

Upper berth, lower berth, that's the difference between talent and genius.

There's a thin line between genius and bottom-barrel stupidness. I hover delicately on a tightrope between the two, wondering where I'll land if I'll ever fall.

When a great genius appears in the world you may know him by this sign; that the dunces are all in confederacy against him."

[Thoughts on Various Subjects]