So why are he and his family—nice, sane people—willing to spend months on the campaign trail?
In deciding not to run in 2012, Mitch Daniels took the sane route when confronted with a crazy presidential campaign process.
Yet this is hardly an issue any sane politician—outside New York anyway—wants to run with.
1721, back-formation from sanity or else from Latin sanus "sound, healthy," in figurative or transferred use, "of sound mind, rational, sane," also, of style, "correct;" of uncertain origin. Used earlier, of the body, with the sense of "healthy" (1620s). Related: Sanely.
Of sound mind; mentally healthy.