Indonesia's Islamic Defenders Front: "Indonesia is a peaceful country and does not need jihadists anymore. Those who want to fight for Islam can go to the battlefields in Palestine or Iraq"

“My comrade-in-arms, my pal, my buddy.”
— Oriana Fallaci

“Robert Spencer incarnates intellectual courage when, all over the world, governments, intellectuals, churches, universities and media crawl under a hegemonic Universal Caliphate’s New Order. His achievement in the battle for the survival of free speech and dignity of man will remain as a fundamental monument to the love of, and the self-sacrifice for, liberty.”
— Bat Ye’or

“Robert Spencer is indefatigable. He is keeping up the good fight long after many have already given up. I do not know what we would do without him. I appreciate all the intelligence and courage it takes to keep going despite the appeasement of the West.”
— Ibn Warraq

“America's most informed, fearless, and compelling voice on modern jihadism.”
— Andrew C. McCarthy, Senior Fellow at National Review Institute

“Robert Spencer is the leading voice of scholarship and reason in a world gone mad. If the West is to be saved, we will owe Robert Spencer an incalculable debt.”
— Pamela Geller, Atlas Shrugs

"The consummate Islam critic and expert." — Bruce Bawer

“Over the years, we have become friends, and I have received his assistance on several pieces of legislation I proposed.”
— Former Congressman Tom Tancredo

“Few people are capable of applying scholarship, analytical reasoning, and objectivity to their topic -- while simultaneously being readable and witty -- as can Robert Spencer.”
— Raymond Ibrahim

“A national treasure...The acclaimed scholar of Islam.”
— Frank Gaffney, Center for Security Policy

“I am indeed honored to call him my friend.”
— Brad Thor, novelist

“A top American analyst of Islam....A serious scholar...I learn from him.”
— Daniel Pipes

“A brilliant scholar and writer.”
— Douglas Murray

"One of my best teachers."
— Ashraf Ramelah, Voice of the Copts

“Thank God there’s at least one man with balls left in the West.”
— Kathy Shaidle, Five Feet of Fury

“I read people like [Mark Steyn] and Bob Spencer and the rest of them, and I say, ‘Boortz, you’re pretending you’re an author. These people really are. They really write some entertaining, some standup stuff.’”
— Neal Boortz

“Robert Spencer is the Stephen King of Jihad.”
— Chris Gaubatz, Muslim Mafia

“Armed with facts and fearlessness, Spencer stands up for Western civilization.”
— Michelle Malkin

“Widely read in conservative foreign policy circles.”
— New York Times

“Widely read in many quarters in Washington.”
— Washington Post

“A canny operative who likely has the inside track on the State Department’s Middle East affairs desk should the tea party win the White House.”
— New York Magazine

“A hero of the American right.”
— Karen Armstrong

"The leading anti-Islamic intellectual in the United States....The go-to Islam expert for the right wing."
— Salon Magazine

“Robert Spencer is an Edward Said turned upside down.”
— Stephen Suleyman Schwartz

“One of the nation's most notorious Islamophobes.”
— Hamas-linked CAIR

"Geller and Spencer are probably the most important propagandizing Islamophobes in the world. These people's voices speak very loudly — not just here in the United States but overseas."
— Heidi Beirach, Southern Poverty Law Center

“Satanic ignoramus.”
— Khaleel Mohammed

“The Likud anti-Christ.”
— Dar al-Hayat newspaper (Saudi Arabia)

“Zionist Crusader, missionary of hate, counter-Islam consultant.”
— Al-Qaeda’s Adam Gadahn, “Azzam the American”