Insanity destroys reason, but not wit.
Insanity is doing the same thing, over and over again, but expecting different results.
Insanity is just what we call stupidity when it doesn't make sense.
Insanity is often the logic of an accurate mind overtasked. Good mental machinery ought to break its own wheels and levers, if anything is thrust among them suddenly which tends to stop them or reverse their motion. A weak mind does not accumulate force enough to hurt itself; stupidity often saves a man from going mad.
Love, n - A temporary insanity curable by marriage.
Insanity does NOT run in my family. It strolls through, takes its time, and gets to know everyone personally. —T-SHIRT
There's a fine line between genius and insanity. I have erased this line.
Don’t worry if people think you’re crazy. You are crazy. You have that kind of intoxicating insanity that lets other people dream outside of the lines and become who they’re destined to be.
Insanity: doing the same thing over and over again and expecting different results.
You're kidding," Shane said. "Do you think I want to visit Crazy McTeeth in his lair of insanity?" "No," Claire said, "but I'm pretty sure you won't like it if I go alone when I just kind of promised to be with you. So...?" "Right. I've been missing Nutty McFang anyway." "Stop making up names for him." "What about Count Crackula?" "Just stop.