Source:

Die philophischen schriften von Gottfried Wilheim Leibniz, vol. III
C. I. Gerhardt (ed)
p 594



Date: 20 April 1716

Translated from the French



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LEIBNIZ TO LOUIS BOURGUET


[G III p594]

     I have just received the honour of your letter, together with the enclosed for Mr Herman, which I will send to him at once. It seems to me that he flatters Mr Newton and the English a little too much in his book. Aside from that, there are many good things in it.
     If your friends in Milan have not yet found the opportunity to send the eggs to Augsburg, it will apparently no longer be the time to do it. Nevertheless I am obliged to you, Sir, for your efforts.
     The deviation of the planets from the elliptic line can apparently only come from the operation of the planets amongst themselves, or from the resistance in the middle. We would have to combine observations with calculation in order to make a judgement on this. The most useful thing would be to determine the course of the Moon, after having clearly determined that of the Earth. Mr Flamsteed1 claims that Mr Newton has not employed enough observations. Mr Zendrini has mentioned nothing to me on Count Riccati's theory on the planets. I hope that he combines observations with arguments.
     Mr Clark has not given me much satisfaction at all. He has not properly understood the force of this maxim, that nothing happens without a sufficient reason to determine it. I do not remember this other Englishman who must have spoken about the matter.
     I will not be able to think about my Dynamics, nor about other matters of philosophy or mathematics, before having been relieved of my present historical work. Moreover, I am sincerely etc. Hanover, 20 April 1716.





NOTE:

1. John Flamsteed (1646-1719), English astronomer.


© Lloyd Strickland 2004