In response to someone espousing an anti-science viewpoint:

What do you think science is?

There’s nothing magical about science.  It is simply a systematic way for carefully and thoroughly observing nature and using consistent logic to evaluate results.  Which part of that exactly do you disagree with?  Do you disagree with being thorough?  Using careful observation?  Being systematic?  Or using consistent logic?

Dr. Steven Novella

 

The definition of science by Steven Novella

 

Dr. Novella can be heard on The Skeptic’s Guide to the Universe podcast (arguably, the best podcast for skeptics).