NIJMEGEN, NETHERLANDS - JUNE 04: Princess Margriet of The Netherlands attends the farewell lecture of professor Keunen on June 4, 2021 in Nijmegen, Netherlands. (Photo by Patrick van Katwijk/Getty Images)
NIJMEGEN, NETHERLANDS - JUNE 04: Princess Margriet of The Netherlands attends the farewell lecture of professor Keunen on June 4, 2021 in Nijmegen, Netherlands. (Photo by Patrick van Katwijk/Getty Images)