There is apt to be a lunatic ...

There is apt to be a lunatic fringe among the votaries of any forward movement.
There is apt to be a lunatic fringe among the votaries of any forward movement.

More phrases

Courage - a perfect sensibility of the measure of danger, and a mental willingness to endure it.
 William Tecumseh Sherman
Feeling, in the broad sense of whatever is felt in any way, as sensory stimulus or inward tension, pain, emotion or intent, is the mark of mentality.
 Susanne Katherina Langer
In that period, we had the Cold War mentality imbued through us - the Post-war [environment] and the Cold War. I think we were reflecting some of that. This was before the Wall collapsed, etc.
 Stephen Mallinder
The kind of group mentality that we had lived under since the Second World War is starting to erupt, and the craving for individualism is now much stronger. It's not as taboo anymore, as it was when I was younger.
 Nicolas Winding Refn
I come out of a Cold War sensibility, a Cold War mentality, and during those Cold War years, I used to know, I thought, the answers to everything. And since the end of the Cold War, I'm just a dumb as everyone else.
 Jules Feiffer

Quotes from the same author

Keep your eyes on the stars and your feet on the ground.
Nine-tenths of wisdom is being wise in time.
“I care not what others think of what I do, but I care very much about what I think of what I do! That is character!”
“We must dare to be great; and we must realize that greatness is the fruit of toil and sacrifice and high courage.”
The mother is the one supreme asset of national life; she is more important by far than the successful statesman, or business man, or artist, or scientist.