Unsurprisingly, I have found Norway to be one of the sanest, calmest, most beautiful countries I have ever lived in.
In a way it is the solidest and sanest time in English letters.
His daughter, who seemed to be the sanest one in the lot, run and shut the door.
You're probably, with one exception, the sanest person she knows, and you at least wouldn't scandalously fleece her.
I am inclined to regard it as the sanest of all human moods.
Alfred was the best, the kindest, the sanest of human beings.
He is the sanest of all the great writers; perhaps the only sane one.
Their eyes bore true witness to what was in their minds, and the sanest eyes can do no more.
Here you may see life at its sanest and most splendid moments.
She is one of the sanest persons I have ever known, it seems to me.
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.