"Our 11th Commandment is perhaps more profound than we realize. "Thou shall not speak ill of any Republican." To do so means we are inhibited in the support we can give that Republican if he should become the nominee of our party. Certainly
our task is harder if we must challenge and refute charges made by our
opponents if those charges were first uttered by us…."
as hard in the coming primary as you can for your candidate, but be
against only those we must defeat in November of 1968. Let
no opposition candidate quote your words in the general election to
advance statism or the philosophy of those who have lost confidence in
man’s capacity for self-rule."
Ronald Reagan in a Speech to the California Republican Assembly, April 1967