1st Baron Parmoor
The second-level symbols: P, Q, R, S, M, P
1
,Q
1
,R
1
䉫 (possible), w (necessary
䉫 (possible), w (necessary
,S
1
,M
1
,P
2
, .... The sym-
bols of this level are the simple or compound proposition in combined calculus.
The Ethics of Artificial Sexuality