“Whenever you find that you are on the side of the majority, it is time to reform.”

Useful as a warning, but not as a command.

;-) I like it, a lot of truth there.

In this day and age, yes, I agree.

Approval of the masses and collective 'stupidity'

Usually.

Did Twain know Marx? Groucho that is! Groucho's more famous, "I never wanted to be a member of a club or group that would have me as a member." To find yourself as a welcomed and comfortable member of the fraternal majority can be scary especially if one has a misanthropic personality.

Hello

Acknowledged, but this is a more complex time. We can no longer tolerate the degenerate, or afford this quote's assertion. We must advance the consciousness of the whole race. With the introduction of nuclear weaponry we are surely required to reach a universal agreement to eradicate these devices. The eradication process is going to require everyone to rejenerate and become a people. 
People never want to "prove people wrong," only the degenerated desire this wish. The rejenerated person understands that people are always appropriately correct, and definitely desire to prove people correct. 

A little tongue in cheek to make a man think, eh?