In the late 1960s, red and the low green LEDs and the infrared semiconductor lasers had already been developed, but there was no prospect of practical blue light emitters, even in the '70s.

Very many researchers, including the front runners in gallium nitride, abandoned the development of gallium nitride-based devices. I have devoted myself to the study of crystal growth, aiming at the development of the p-n junction of gallium nitride.

I was overwhelmed by so many interviewers and then messages of congratulations. So many congratulation messages. I feel this shows the authority and the greatness of the Nobel Prize.

Light is a metaphoric thing. There is green light and red light. Then there is black light, which is mostly danger.

Unless the green light is turned into a red light, unless there's a clear message (from) Mr. Arafat to stop terrorism, there can't be any peace process.

I rule out categorically any 'traffic-light' coalition with red and green.