Thou shalt not follow a multitude to do evil ...

If fifty million people say a foolish thing, it is still a foolish thing.

Is uniformity of opinion desirable? No more than that of face and stature.

Where all think alike, no one thinks very much.

When a dove begins to associate with crows its feathers remain white but its heart grows black.

Some of the roads most used lead nowhere.

If you always live with those who are lame, you will yourself learn to limp.

Orthodoxy is my doxy; heterodoxy is another man's doxy.

Unanimity is worse than censorship. Censorship obliges us to hold our own truth silent; unanimity forces us to repeat the truth of others, even though we do not believe it... . It dissolves our own personalities into a general, monotonous chorus.

Never say No when the world says Aye.