We are simply amazed with all the genius who had come before us. What we enjoy in the present are products of the hardships of the scientists centuries ago. Einstein, Newton, Darwin, and Galileo Galilei are just few of the many famous scientists in history. Their theories and inventions brought us this far. In addition to the list of the famous scientist, we have Stephen Hawking who passed away at 76. They are all imperfect humans with flaws. Yet, we see their best through their contributions in the field of science. They were an epitome of people who never give up. We owe them most of our science knowledge.