Although they are not "new" as Capital Kiwi's sayings are I venture to offer these two favorites which I have quoted whenever the appropriate occasion arose, They are both by Finley Peter Dunne from his series of "Mr. Dooley" newspaper columns which were written in an immigrant Irish accent, hence the spellings as I am quoting accurately.

"A fanatic is a man that does what he thinks th'Lord wud do if He knew th' facts iv the case."

And one that has come in handy lately : "No matter whether th' constitution follows th' flag or not, th' supreme coort follows the iliction results."

And to give credit where it is long overdue, and in modern English, it was Dunne who said :
Trust everybody but cut the cards.
wow