Stephen Hawking has died peacefully at home at the age of 76.
The world-renowned physicist was told he would only have two years to live when diagnosed motor neuron disease, a rare form of ALS, aged 21.
Some 55 years later, it is safe to say he defied the odds and helped transform the way scientists view black holes and the universe.
As well his contribution to science, Hawking was a philosopher of sorts, a powerful political voice, and had a good line in acerbic wit.
These 15 quotes show Hawking’s approach to science and to life in general — and take you inside the mind of a genius.
“My advice to other disabled people would be, concentrate on things your disability doesn’t prevent you doing well, and don’t regret the things it interferes with. Don’t be disabled in spirit, as well as physically.”
“My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.”
On free will
“I have noticed that even people who claim everything is predetermined and that we can do nothing to change it, look before they cross the road.”