Stefan Hell — Romanian Physicist born on December 23, 1962,

Stefan Walter Hell is a Romanian-born German physicist and one of the directors of the Max Planck Institute for Biophysical Chemistry in Göttingen, Germany. He received the Nobel Prize in Chemistry in 2014 "for the development of super-resolved fluorescence microscopy", together with Eric Betzig and William Moerner... (wikipedia)

According to the belief, molecules closer together than 200 nanometers could not be told apart with focused light. This is because, in a packed molecular crowd, the molecules shout out their fluorescence simultaneously, causing their signal, their voices, to be confused.
It's childish, but it still gives me great pleasure to see high-res pictures everyone told me would be impossible.
Calling on each molecule one by one? No way. I just told all of them to be quiet - except for a selected few.
I love to be a scientist. I've always enjoyed being curious.
I got bored with the topic; I felt this was 19th century physics. I was wondering if there was still something profound that could be made with light microscopy. So I saw that the diffraction barrier was the only important problem that had been left over.