I can calculate the motion of heavenly bodies but not the madness of people. (Quote by - Isaac Newton)

What is more insane than to vent on senseless things the anger that is felt towards men? (Quote by - Lucius Annaeus Seneca)

There's a fine line between genius and insanity. I have erased this line. (Quote by - Oscar Levant)

When we remember that we are all mad, the mysteries disappear and life stands explained. (Quote by - Mark Twain)

Oh! thou who are greatly mad, deign to spare me who am less mad. (Quote by - Quintus Horatius Flaccus)

Love: a temporary insanity, curable by marriage. (Quote by - Ambrose Bierce)

There is no great genius without some touch of madness. (Quote by - Seneca)

Insanity is doing the same thing in the same way and expecting a different outcome. (Quote by - Chinese Proverb)

The sanity of society is a balance of a thousand insanities. (Quote by - Ralph Waldo Emerson)

Insanity is often the logic of an accurate mind overtasked. (Quote by - Oliver Wendell Holmes)

That he is mad, 'tis true; 'tis true 'tis pity; And pity 'tis 'tis true. (Quote by - William Shakespeare)

Mothers are all slightly insane. (Quote by - J. D. Salinger)

Insanity is not a distinct and separate empire; our ordinary life borders upon it, and we cross the frontier in some part of our nature. (Quote by - Henri Taine)

There has never been any great genius without a spice of madness. (Quote by - Lucius Annaeus Seneca)

All of us are crazy in one way or another. (Quote by - Yiddish Proverb)

It is a common calamity; at some one time we have all been mad. (Quote by - Baptista Mantuanus)

There is a thin line between genius and insanity. I have erased this line. (Quote by - Oscar Levant)

There is a pleasure, sure, In being mad, which none but madmen know! (Quote by - John Dryden)

Who then is sane? He who is not a fool. (Quote by - Quintus Horatius Flaccus)

I became insane, with long intervals of horrible sanity. (Quote by - Edgar Allan Poe)

For me, insanity is super sanity. The normal is psychotic. Normal means lack of imagination, lack of creativity. (Quote by - Jean Debuffet)

O, hark! what mean those yells and cries? His chain some furious madman breaks; He comes--I see his glaring eyes: Now, now, my dungeon grate he shakes. Help! Help! He's gone!--O fearful woe, Such screams to hear, such sights to see! My brain, my brain,--I know, I know I am not mad but soon shall be. (Quote by - Monk Lewis)

They call me mad, while they are all mad themselves. (Quote by - Titus Maccius Plautus)

We are not ourselves When nature, being oppressed, commands the mind To suffer with the body. (Quote by - William Shakespeare)

He appears mad indeed but to a few, because the majority is infected with the same disease. (Quote by - Quintus Horatius Flaccus)