Well, the human mind was a fickle thing, and as Bitty said, he could try to make things right in the future.

Actually, human brain cells are fairly fickle things to start with.

But memory, however vivid, can be a fickle thing.

But, as Mack had found out earlier, luck was a fickle, fragile thing, and never to be counted on.

Wall Street's ardor is a fickle thing, of course.

On the other hand, woman in Pakenham's work is a fickle thing.

Her heart, fickle thing, yearned now toward the man on the ship.

The one who might die in the doing, to be sure, since fortune was a fickle thing.

I suppose the heart can be a fickle thing when it comes to hurt and love.