Many badly needed goals, like fusion and cancer cure, would be achieved much sooner if we invested more.

My first popular book, 'A Brief History of Time,' aroused a great deal of interest, but many found it difficult to understand.

I’m the archetype of a disabled genius, or should I say a physically challenged genius, to be politically correct. At least I’m obviously physically challenged. Whether I’m a genius is more open to doubt.

There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.

Disability need not be an obstacle to success.

Religion believes in miracles, but these aren't compatible with science.

Maybe I don't have the most common kind of motor neuron disease, which usually kills in two or three years.