method in madness
(a) method in (one's) madness
A specific, rational purpose in what one is doing or planning, even though it may appear crazy or absurd to another person. Usually used in the phrase "have/there is (a) method in (one's) madness." You may have method in your madness, but these radical changes to the business could still prove catastrophic. I know you don't understand my motivation for this decision, but after the dust settles you'll see that there is a method in my madness.
method in (one's) madness
A specific, rational purpose in what one is doing or planning, even though it may seem crazy or absurd to another person. Originated in Shakespeare's Hamlet: "Though this be madness, yet there is method in it." He may seem scattered and disorganized, but I guarantee there's a method in his madness.
*method in one's madness
Fig. a purpose in what one is doing, even though it seems to be crazy. (*Typically: be ~; have ~.) What I'm doing may look strange, but there is method in my madness. Wait until she finishes; then you'll see that she has method in her madness.