The position we hold is often said to be 'extreme,' and those of us who hold it are said to be 'extremists.' The unspoken suggestions are that extreme positions cannot be right, and that extremists must be wrong. But I am an extremist when it comes to rape—I am against it all the time. ... The plain fact is, moral truth often is extreme, and must be, for when the injustice is absolute, then one must oppose it—absolutely."
Tom Regan, philosopher, animal rights advocate