Letters are dwindling with time, but their beauty and authenticity remains timeless. People have been writing letters for ages, countless letters expressing distress, conveying happiness, delivering news and even changing history. Find out what happened when the iconic artist, Leonardo da Vinci applied for a job as an engineer to a patron, when the renowned scientist, Albert Einstein wrote about whether scientists prayed or not, when the legendary singer, Elvis Presley asked for a badge of federal credentials from President Nixon in our annotated edition of 50 World's Greatest Letters, which encompasses all these and many more interesting, memorable and riveting letters.“Sir, more than kisses, letters mingle souls; for, thus friends absent speak.” – John Donne “I feel certain that I am going mad again . . . And I shan’t recover this time.”– Virginia Woolf to Leonard Woolf “. . . the element uranium may be turned into a new and important source of energy in the immediate future.”– Albert Einstein to Franklin Roosevelt “. . . you are today the one person in the world who can prevent a war . . .” – M K Gandhi to Adolf Hitler “Homosexuality . . . is nothing to be ashamed of . . .”– Sigmund Freud to a mother