Using his own quotes, Twitter gives a final tribute to Stephen Hawking

Late Tuesday night, famed scientist Stephen Hawking died at age 76.
Hawking, also the author international bestseller “A Brief History of Time,” was diagnosed with amyotrophic lateral sclerosis, or ALS, at age 21. His life, struggles and fame were recently documented in the Academy Award winning film “The Theory of Everything.”
Hawking’s death sent shockwaves through social media, prompting celebrities, scientists and more to write tributes to the late theoreti