“Vetabo qui Cereris sacrum vulgarit arcanum sub usdem sit trabibus.”
I spent three days with this celebrated man, but I thought myself obliged to refrain from asking his opinion on any religious questions, although I had a great desire to do so, as it would have pleased me to have had his opinion on that delicate subject; but I believe that in matters of that kind M. Haller judged only by his heart. I told him, however, that I should consider a visit to Voltaire as a great event, and he said I was right. He added, without the slightest bitterness,
“M. de Voltaire is a man who ought to be known, although, in spite of the laws of nature, many persons have found him greater at a distance than close at hand.”
M. de Haller kept a good and abundant though plain table; he only drank water. At dessert only he allowed himself a small glass of liqueur drowned in an enormous glass of water. He talked a great deal of Boerhaave, whose favourite pupil he had been. He said that after Hypocrates, Boerhaave was the greatest doctor and the greatest chemist that had ever existed.
“How is it,” said I, “that he did not attain mature age?”
“Because there is no cure for death. Boerhaave was born a doctor, as Homer was born a poet; otherwise he would have succumbed at the age of fourteen to a malignant ulcer which had resisted all the best treatment of the day. He cured it himself by rubbing it constantly with salt dissolved in his own urine.”
“I have been told that he possessed the philosopher’s stone.”
“Yes, but I don’t believe it.”
“Do you think it possible?”
“I have been working for the last thirty years to convince myself of its impossibility; I have not yet done so, but I am sure that no one who does not believe in the possibility of the great work can be a good chemist.”