From Neil Gaiman’s short story The Return of the Thin White Duke:

The Duke contemplated losing his head to this woman, and found the prospect less disturbing than he would have expected.

A wind blew through the garden of dead flowers, and the Duke was put in mind of perfumed ghosts.

“Would you like to know the answer?” she asked.

“Answers,” he said. “Surely.”

“Only one answer, and it is this: the heart,” said the Queen. “The heart is greater than the universe, for it can find pity in it for everything in the universe, and the universe itself can feel no pity. The heart is greater than a King, because a heart can know a King for what he is, and still love him. And once you give your heart, you cannot take it back.”

“I said a kiss,” said the Duke.

“It was not as wrong as the other answers,” she told him. The wind gusted higher and wilder and for a heartbeat the air was filled with dead petals. Then the wind was gone as suddenly as it appeared, and the broken petals fell to the floor.