Madness And Insanity Quotes by Sam Levenson, Miguel de Cervantes, William Shakespeare, Henrik Tikkanen, Mackenzie Phillips, William Ellery Channing and many others.

Insanity is hereditary; you get it from your children.
Too much sanity may be madness and the maddest of all, to see life as it is and not as it should be.
Madness in great ones must not unwatched go.
Truly great madness can not be achieved without significant intelligence.
There’s a fine line between genius and insanity, as we all know.
I am but mad north-north-west. When the wind is southerly, I know a hawk from a handsaw.
A man might pass for insane who should see things as they are.
Great wits are sure to madness near allied, and thin partitions do their bounds divide.
Insanity in individuals is something rare – but in groups, parties, nations and epochs, it is the rule.
Insane people are always sure they’re just fine. It’s only the sane people who are willing to admit they’re crazy.
Insanity is often the logic of an accurate mind overtasked.
When love is not madness, it is not love.
Men have called me mad; but the question is not yet settled, whether madness is or is not the loftiest intelligence.
The difference between insanity and genius is measured only by success and failure.
You’re only given a little spark of madness. You mustn’t lose it.
I may be crazy, but it keeps me from going insane.
Everyone is more or less mad on one point.