( ( 120 ) 
this, and therefore ought in Candor to have acknowledged 
it. After he had thus far explained his own Method, he 
added that what he had there laid down were the Princi- 
ples of ai much fublimer Geometry, reaching to the moft 
difficult and valuable Problem'?, which were icarce to be re- 
volved without the Differential Calculus, AUT SJM IJL I, 
or another like it. What he meant by the Words A.U 1 . 
SIMILl was impoffible for the Cerinans to underftand 
• without an Interpreter. He ought to have done Mr. Newton 
juflice in plain intelligible Language, and told the Germans 
whofe was. the Methodus SIM IL IS, and of what Extent 
andAntiquicy it was, according to the Notices he had recei- 
ved from England ; and to have acknowledged that his own 
Method was not fo ancient.- This would have prevented 
Difputes, and nothing lefs than this could fully deferve the 
Name of Candor and Juflice. But afterwards, in. his An- 
fwer to Mr. Fatio, to tell the Germans that in the Year 1 684, 
Y#hen he firft publifhed tile Elements of his Calculus, • he • 
knew nothing of a Met ho das S / M I L I S, nothing of 
any other Method than for drawing Tangents, was very 
flrangeand wants an Explanation; 
It lies upon him alfo to fatisfv the World why, in his An- 
fwer to. Dr Wallis and Mr. Fatio, who had publifhed that 
Mr. Newton was the oldeft Inventor of that Method by many 
Years, he did not putin'his Claim of .being the. oldefl Inven- 
tor thereof, but flaid till the old Mathematicians were dead, 
and then complained of the new Mathematicians as Novices ; 
attacked Mr- Newton himfelf, and declined to contend with 
* any Bpdy-elfe, notwithffanding that Mr. Newton in his Let- 
cerof©#^. 24. 1676 had told him, that for the fake of Qui- 
et, he had Five Years before that time laid afide his Defign 
of publilhing whatiie had then written on this Subject, and 
has ever frnce induflrioufly avoided all Difputes about Phi-* 
lofophical and Mathematical Subje&s, and all Correfpon- 
denee hy Letters about thofe Matters, as tending to Dis- 
putes,; 
