The Nobel Prize in Physics 1999 was awarded jointly to Gerardus 't Hooft and Martinus J.G. Veltman "for elucidating the quantum structure of electroweak interactions in physics."
See the list of all Nobel Prizes, awarded for "the greatest benefit to mankind."
In his will, Alfred Nobel left 31 million SEK to found the Nobel Prizes.
Medicine Laureate Shinya Yamanaka talks about the importance of taking risks.