http://www.humanreligions.info/tags/anti-religion.html
Human Truth Foundation pages (11):
Mass Education Versus Religion: 1. Religion and Intelligence
What's the Difference Between The Left and The Right?: 4. Areas of Discernible Difference
Science and Religion: 4. Intelligence Acting Against Religion
Time to Move On: Religion Has Cost Too Much: 3.1. Religion is Bad for Intelligence
How to Kill God and Reduce Religion
Friedrich Nietzsche: 3. Anti-Religion
Atheism and Secularism: 6. Intellectualism and Atheism
What Causes Religion and Superstitions?: 5.8. Intelligence and Suggestibility
Anti-Religious Forces: Specific Factors Fuelling Secularisation: 2.6. Intelligence
Not from the Human Truth Foundation, but still relevant (1):