free-thinking
adj1
Having opinions that are contrary to dogma or the positions of authority.
- His background was academic, though not directly in mathematics or physics. His father, Frank, was an expert in tropical diseases and his mother, Isobel (nee Walker), was a free-thinking radical who had a great influence on him.2018 March 14, Roger Penrose, “'Mind over matter': Stephen Hawking – obituary by Roger Penrose”, in The Guardian: