I can calculate the motion of heavenly bodies but not the madness of people.

I can calculate the motion of heavenly bodies but not the madness of people.

Insanity: doing the same thing over and over again and expecting
different results.

Insanity: doing the same thing over and over again and expecting
different results.

But when Fate destines one to ruin it begins by blinding the eyes
of his understanding.

But when Fate destines one to ruin it begins by blinding the eyes
of his understanding.

Oh! thou who are greatly mad, deign to spare me who am less mad.
[Lat., O major tandem parcas, read more

Oh! thou who are greatly mad, deign to spare me who am less mad.
[Lat., O major tandem parcas, insane, minori.]

I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me.

I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me.

Mad as a March hare.

Mad as a March hare.

No excellent soul is exempt from a mixture of madness.

No excellent soul is exempt from a mixture of madness.

They call me mad, while they are all mad themselves.
[Lat., Hei mihi, insanire me ajunt, ultro cum ipsi read more

They call me mad, while they are all mad themselves.
[Lat., Hei mihi, insanire me ajunt, ultro cum ipsi insaniunt.]

Some are born mad. Some remain so.

Some are born mad. Some remain so.