Which constants must be quoted?

To: Kent M Pitman <KMP@SCRC-STONY-BROOK.ARPA>
Subject: Which constants must be quoted?
From: CPH%OZ.AI.MIT.EDU@XX.LCS.MIT.EDU
Date: Sat, 15 Feb 1986 01:59 EST
Cc: JAR@MC.LCS.MIT.EDU, kend%tekla.uucp@CSNET-RELAY.ARPA, RRRS-AUTHORS@MC.LCS.MIT.EDU, willc%tekchips%tektronix.csnet@CSNET-RELAY.ARPA
In-reply-to: Msg of 14 Feb 1986 19:37-EST from Kent M Pitman <KMP at SCRC-STONY-BROOK.ARPA>

I agree with you completely.