It is by the free exchange of ideas and opinions that we learn, and draw closer to knowledge of the truth. But the critic who lacks the cojones and courage to establish their identity by using an alias might consider the words of Theodore Roosevelt:

The man who really counts in the world is the doer, not the mere critic-the man who actually does the work, even if roughly and imperfectly, not the man who only talks or writes about how it ought to be done.

It is not the critic who counts, not the man who points out how the strong man stumbled, or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena; whose face is marred by the dust and sweat and blood; who strives valiantly; who errs and comes short again and again; who knows the great enthusiasms, the great devotions and spends himself in a worthy cause; who at the best, knows in the end the triumph of high achievement, and who, at worst, if he fails, at least fails while daring greatly; so that his place shall never be with those cold and timid souls who know neither victory or defeat.
"Citizenship in a Republic" - a speech at the Sorbonne, Paris, France, 23 April 1910