At any given moment there is an orthodoxy, a body of ideas of which it is assumed that all right-thinking people will accept without question. It is not exactly forbidden to say this, that or the other, but it is ‘not done’ to say it… Anyone who challenges the prevailing orthodoxy finds himself silenced with surprising effectiveness. A genuinely unfashionable opinion is almost never given a fair hearing, either in the popular press or in the high-brow periodicals. George Orwell
Orthodoxy is the diehard of the world of thought. It learns not, neither can it forget. Aldous Huxley
The heresy of one age becomes the orthodoxy of the next. Helen Keller
Heresy is a cradle; orthodoxy a coffin. Robert Green Ingersoll
It is the fate of every great achievement to be pounced upon by pedants and imitators who drain it of life and turn it into an orthodoxy which stifles all stirrings of originality. Eric Hoffer
The atmosphere of orthodoxy is always damaging to prose, and above all it is completely ruinous to the novel, the most anarchical of all forms of literature. George Orwell
Men who are orthodox when they are young are in danger of being middle-aged all their lives. Walter Lippmann