There are no God – that's the conclusion of the celebrated physicist Stephen Hawking, whose final book is published Tuesday.
Hawking said he received most of his time on earth.
Hawking, considered one of the most brilliant scientists of his generation, died in March at the age of 76.
"There is no God. No one directs the universe, "he writes in" Letter Answers to the Big Questions. "
" For centuries, it was believed that disabled people like me were living under a curse that was inflicted by God, "he adds.
Hawking suffered from amyotrophic lateral sclerosis (ALS), a neurodegenerative disorder known as Lou Gehrig's Disease, for most of his adult life.
'Happiness looking inward'
While hawking spoke of his belief in God during
"There are forms of intelligent life out there," he writes.
"Travel back in time can not be ruled out according to our present understanding "He says. So he predicts that "within the next hundred years we want to be able to travel to anywhere in the solar system."
Lucy Hawking, who helped complete the book, told CNN.
Hawking saw the world on the brink of a "vast transformative change" when he died, she noted, adding, "He's not useless to go into the future blindly. How good is the track record of the human race in using advances in technology for the good of ordinary people? "
In remarks prepared by Hawking and played at the launch of the London book on Monday, the scientist thus turned his attention
"With Brexit and Trump now exerting new forces in relation to immigration and the development of education, we are witnessing a global revolt against experts, and that includes scientists," Hawking said.  Hawking had been a critic of the United Kingdom's decision to leave the European Union, and called Donald Trump a "demagogue" in 2016.
His greatest concern, his daughter said, "is how divided we've become," adding
Hawking's final message to readers, though, is a hopeful one.
Attempting to answer the question "How do we shape the future?" in the final chapter of the book, the scientist writes: