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ESSAY on HUMAN LIBERTY. By RICHARD KIR WAN, Efq. 

 L. L. D. F. R. S. and M. R. I. A. 



^- Power denotes the principle of adlion. A dtion denotes Read July 



z8th 1798. 

 the exercije or power. 



2. Necefity denotes the conceived impoJJib'tUty of the non-exift- 

 cnce of any thing. - t 



3. Hence neceffity is of three kinds, metaphyfical, phyfical 

 and moral. 



An objedl is faid to be metaphyjically neceffary when its abfence 

 involves a contradidlion ; and to be phyftcally neceflary when its 

 non-exiftence contradids* the eftablifhed laws of corporeal nature, 

 or when it cannot fail to exift, or cannot exift otherwife than it 

 does, without a miracle. 



Vol. VII. a q Laftly, 



