India, Jan. 30 -- Albert Einstein, a renowned and globally revered German-born theoretical physicist, is best known for his theory of relativity. He received the Nobel Prize in Physics in 1921 because of his contributions to theoretical physics and his discovery of the law of the photoelectric effect.ALSO READ: Quote of the day by Oscar Wilde: 'To live is the rarest thing in the world. Most people exist, that is all'

Beyond his much-celebrated scientific achievements, Albert Einstein also had a very profound outlook on life, expressing deep philosophical insights in simple, easy-to-understand metaphors. On February 5, 1930, the scientist wrote a letter, sharing thoughtful life advice with his son, Eduard.Albert wrote in the letter, "Life...