#empiricism

Trusts only what observation and controlled experiment can show, treating every untested belief as a hypothesis owed a confrontation with data and demanding "compared to what?" before any causal claim

Turns observation, instruments, and mathematics into reliable knowledge of nature — trusting reproducible experiment and peer correspondence over inherited authority.

The cadaver opened by one's own hand is the only authority on the body; when corpse and Galen disagree, Galen dissected an ape