Carl Sagan departed two decades ago. Born today, November 9, back in 1934, the American astronomer, cosmologist, astrophysicist, astrobiologist, author, etc. is best known for his work as a science popularizer and communicator. His scientific contribution includes his research on extraterrestrial life, demonstration of amino acids, assembly of the first physical messages sent into space, an acknowledgment of the greenhouse effect, etc.
Sagan published more than 600 scientific papers/articles and was the author, co-author or editor of more than 20 books. His papers, containing 595,000 items, are archived at The Library of Congress. He also wrote the science fiction novel Contact, which is the basis for a 1997 film of the same name. Simply put, he was a greater genius than we might think. He was as spiritual as he was scientific. You might have heard his name every now and then, owing to the timeless characteristic of his thoughts and views on life. Below is a compilation of some of his best views that might even change your perspective on life.