Those who never retract their opinions love themselves more than they love the truth. Joseph Joubert
One must judge men not by their opinions, but by what their opinions have made of them. Georg Christoph Lichtenberg
A constitutional statesman is in general a man of common opinions and uncommon abilities. Walter Bagehot
First learn, and then form opinions. Jewish Proverb
The amount of people equals the amount of opinions. Hungarian Proverb
Where two Jews, three opinions. Jewish Proverb