“I will give you something which will please you.”

I made her, by way of jest, two magic squares, which delighted her. In return, she shewed me some trifles with which I was well acquainted, but which I pretended to think very astonishing. My good genius then inspired me with the idea of trying divination by the cabala. I told her to ask a question in writing, and assured her that by a certain kind of calculation a satisfactory answer would be obtained. She smiled, and asked why I had returned to Amsterdam so soon. I shewed her how to make the pyramid with the proper numbers and the other ceremonies, then I made her extract the answer in numbers, translating it into French, and greatly was she surprised to find that the cause which had made me return to Amsterdam so soon was—love.

Quite confounded, she said it was very wonderful, even though the answer might not be true, and she wished to know what masters could teach this mode of calculation.

“Those who know it cannot teach it to anyone.”

“How did you learn it, then?”

“From a precious manuscript I inherited from my father.”

“Sell it me.”

“I have burnt it; and I am not empowered to communicate the secret to anyone before I reach the age of fifty.”

“Why fifty?”

“I don’t know; but I do know that if I communicated it to anyone before that age I should run the risk of losing it myself. The elementary spirit who is attached to the oracle would leave it.”