Brief Answers to the Big Questions by Stephen Hawking
01
Is there a God?
He treats “God” as unnecessary for explaining the universe’s workings: physical laws can, in principle, account for origins and structure. He’s also careful to separate scientific explanations (how things happen) from personal meaning (what we value).
02
How did it all begin?
He summarizes the big-bang picture and the idea that the early universe is governed by quantum physics. He’s interested in approaches where the universe could arise without a single “before” moment in the usual sense—origins as a boundary/condition rather than a simple event.
03
How did it all begin?
He summarizes the big-bang picture and the idea that the early universe is governed by quantum physics. He’s interested in approaches where the universe could arise without a single “before” moment in the usual sense—origins as a boundary/condition rather than a simple event.
04
Can we predict the future?
At everyday scales we can, but at fundamental scales quantum uncertainty sets limits. Even with deterministic laws, complexity and sensitivity to initial conditions can make long-range prediction effectively impossible.
05
Is time travel possible?
He explores what relativity allows and why paradoxes arise. The tone is skeptical about practical time travel, and he uses it to illustrate what physics says about time, causality, and constraints.
06
Will we survive on Earth?
This is one of the most urgent sections: he warns about climate change, nuclear conflict, pandemics, and resource pressures. His case is that survival requires global cooperation and science-informed policy, not denial or short-termism.