Hawking, 73, suffers from motor neurone disease, and has argued that keeping someone alive against their own wishes is the "ultimate indignity".
In 2013, Hawking had said that terminally ill patients should have access to assisted suicide, as long as there are checks to prevent abuse.
In an interview for a new BBC programme, the scientist disclosed he suffered bouts of loneliness, because people can be afraid to talk to him or let him answer.
"I would consider assisted suicide only if I were in great pain or felt I had nothing more to contribute but was just a burden to those around me," he said.
But, Hawking added: "I am damned if I'm going to die before I have unravelled more of the universe."
He is not in pain, he said, but suffers occasional discomfort because he cannot adjust his own position, 'The Telegraph' reported.
The neurodegenerative disease causes the nerve cells that control movement to degenerate.
Hawking has been wheelchair bound for decades and lost his ability to speak without an electronic voice in 1985.
When asked about what he misses about being able-bodied, he added: "I would like to be able to swim again. When my children were young, I missed not being able to play with them physically."
The programme to be broadcast on BBC One on June 15 will also feature interviews with Lucy, Hakwing's daughter, his youngest son Tim, and his Cambridge research students.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
