Question

how do you know that doctor Hawking is a perfect example of optimism and hope

Answer 1

Ya he gave the result of his hope
lol

Answer 2

Stephen Hawking was paralysed. He was the one who can't walk on his own. He was the one who, in later phase of his life, was not even able to talk. He was the one who can't do anything besides thinking. But he was the one who changed a lot in physics specially in cosmology and astrological physics. The man who can't even speak, whose life was confined to a small wheel chair, that man fought with all typical things and gave world many beautiful gifts.
Suffering from so much problems but still reading, studying and researching, he established an idol for all people. Hence, he was a perfect example of optimism and hope who never left his hope down till the last day of his life.