(io89) 
For It IS very certain, that no Two Laingiisges can be fo 
much different the one from the otherj but that the know- 
ledge of the one will be fubfervient to the gaining of the o- 
ther : not only becaufe there is now a common Language 3 
wherein the Teacher may Interpret to the Learner the fig- 
nification of thofe Words and Notions which he knows not, 
and exprelshb own Thoughts to him ; but likewire(which 
is very confiderablej ) becaufe the common Notions of Lan* 
gnagey wherein all or moft Languages do agree 3 and alio 
fo many of the Particularities thereof as are common to the 
Language he knows already, and that which he is to learn^ 
(which will be very many,) are already known ; and there- 
fore a very confiderable part already difpatched^ of tha!^ 
work which will be neceflary for the teaching of a Firft 
Language^ to him who as yet knows none* 
But to this difadvantage (of teaching a Firft Languagej) 
when that of Deafnefi is fuper-added, it muft needs aug- 
ment the difficulty : fince it is manifeftly evident from Ex- 
perience, That the moft advantageous way of teaching a 
Child his Firft Language, is that of perpetual Difcowrfe^ not 
onely what is particularly addreffed to himfelf 3 as well in 
pleafihg divertilements, or delightful fportingSjCand there- 
fore infinuates it lelf without any irklbm or tedious labour^) 
as what is direftly intended for his more ferious Informa- 
tion : But that difcourfe alfo which pafleth between others^ 
where, without pains or ftudy , he takes notice of what A- 
<aions in the Speaker do accompany fuch words^ and what 
Effeffs they do produce in thofe to whom they are dire- 
(Sed 3 which doth, by degrees, iufinuate the intendments 
of thofe words. 
And^ as that Deafnefs makes it the more difficult to teach 
him a Language : fo on the other hand, that want of Lan- 
guage, makes it more hard to teach him how to (peak or 
pronounce the Sounds. For there being no other way to di- 
reft his Speech, than by teaching him how the Tongue, the 
Lips, the Palate, and other Organs of (peech , are to be ap- 
plyed and moved in the Forming of fuch founds as are re- 
qu-ued 5 to thefend that he may, by Ari^ pronounce thofe 
P 2 ' Sounds^ 
