Previous Speakers

Previous Threshold speakers have included:

• Carl Sagan
• Isaac Asimov
• Claire Bloom
• Alex Haley
• Lt. General James A. Abrahamson
• Stephen F. Cohen
• Ralph Nader
• Robert Jarvik
• Michael Medved
• Jane Bryant Quinn
• Harold S. Kushner
• Robert F. Kennedy, Jr.
• Archduke Rudolph of Austria
• Roger Cossack
• Heinz-Joachim Fischer
• Jerome Oetgen
• Benjamin Zander
• Colleen Carroll Campbell
• Neil deGrasse Tyson