Particle physicists are sometimes described as Platonists, referring to their belief that the ultimate explanation of the Universe must possess beauty. Since scientists in other fields are more sceptical about the role of beauty in science, HEP physicists are in a unique position: we know there is beauty in the fundamental laws that we discovered and this is a great message that we could share. I will give a short sample of ideas of renowned physicists about relation of truth and beauty, discuss beauty criteria and give examples of several elegant physical thories.