“I shall just sit down for a moment and pop on my boots and then I’ll be on my way. Speaking of ways, pet, by the way, there is such a thing as a tesseract.” Mrs. Murry went very white and with one hand reached backward and clutched at a chair for support. Her voice trembled. “What did you say?” Mrs Whatsit tugged at her second boot. “I said,” she grunted, shoving her foot down in, “that there is”—shove—“such a thing”—shove—“as a tesseract.