I remember once quarreling with Yeats who was walking around the room with a sword in one hand muttering spells to ward off evil spirits, and I noticed that every time he passed a plate of plums he put down his unoccupied hand and took a plum and I said, "Yeats, you cannot evoke great spirits and eat plums at the same time."

As quoted in Across My Path (1952) by Pelham Edgar, p. 148