At the same time, she believed these elaborate entertainments and sumptuous court rituals, which incorporated martial sports and tournaments of many kinds, would occupy her feuding nobles and distract them from fighting against each other to the detriment of the country and the royal authority. Catherine wrote to Charles IX: "I heard it said to your grandfather the King that two things were necessary to live in peace with the French and have them love their King: keep them happy, and busy at some exercise, notably tournaments; for the French are accustomed, if there is no war, to exercise themselves and if they are not made to do so they employ themselves to more dangerous ". Quoted in Jollet, 111.</ref> Catherine also exercised her own creative gifts in the devising of the court festivals. Biographer Leonie Frieda suggests that she, "more than anyone, inaugurated the fantastic entertainments for which later French monarchs also became renowned".