A close mouth catches nae flees.
"A shut mouth keeps me out of strife."—Portuguese.
A cock's aye crouse on his ain midden-head.
"A cock is valiant on his own dunghill."—Danish.
A' complain o' want o' siller, but nane o' want o' sense.
A coward's fear maks a brave man braver.
A crackit bell will never mend.
A' cracks mauna be trew'd.
All that is heard must not be believed.