I met him in NYC at the Union Square Barnes and Noble when he was promoting his book. He has a more whimsical tone to his charisma than Sagan. Sagan's was more reflective and focused. Both passionate about science and Cosmology.

I think Sagan's approach was fitting. I only worry that Neil's wit could be misinterpreted as arrogance by those who could benefit from a deeper appreciation of science and existence. Either way, I look forward to an updated reflection on what we've learned and seek to learn in the very near future.