My testing style, attitude and approach has had many influences. I only recently realised that one of them has become very mainstream.
"nothing is true, everything is permitted"
Words attributed to Hassan-i Sabbah on his death bed. Specifically ambiguous and open to misuse. Perfect for testing.
Objections such as “No user would ever do that” have no stopping power on the Assassin influenced tester.
If the system allows me do it, and I observe that the system allows me do it, and I figure out how to manipulate the system into doing it, I do it.
This phrase helped me through some difficult and turbulent waterfall testing times.
Try it on and see how it fits your testing style.
Just remember to treat software systems and people systems differently.