MORE: I will not take the oath. I will not tell you why I will not.
NORFOLK: Then your reasons must be treasonable!
MORE: Not “must be;” may be.
NORFOLK: It’s a fair assumption!
MORE: The law requires more than an assumption; the law requires a fact.

Robert Bolt (1924-1935) English dramatist

A Man for All Seasons, Act 2 (1960)