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Biz Stone

Co-founder of Twitter, X Corp. (formerly Twitter, Inc.)

Search every verified Biz Stone interview, podcast appearance, and on-the-record quote — each transcript cross-checked by AI and human review to confirm speaker identity. Biz Stone, co-founder of Twitter, has spoken about the company's evolution and his philosophy of building products. He stated that Twitter's purpose is to "serve the public conversation" and that the company has a responsibility for the health of that conversation. Stone said he articulated this purpose statement after returning to Twitter, noting that it helped align the company's efforts. He has also discussed the use of machine learning and artificial intelligence to identify toxic content, disinformation, and hate speech on the platform. Stone has maintained that freedom of speech is a fundamental human right, but added that "the freedom to have your speech amplified by Twitter is not a fundamental human right" and that users should "earn that right." Stone has reflected on the early days of Twitter, describing it as a project built for fun that he and co-founder Jack Dorsey were emotionally invested in. He recounted a moment during the prototyping phase when a tweet from Evan Williams made him laugh, which he said was the moment he realized the emotional investment was there. Stone has also discussed his approach to entrepreneurship, stating that he believes in starting somewhere, even if it is usually wrong, and then watching for patterns. He has advised that if a product is fun, people are more likely to use it, and that importance can follow from widespread use. Stone has also spoken about his early life, noting that he started working at age eight and that his family was on welfare.

Recent appearances

Notable quotes

“Twitter wasn't the cause of the Arab Spring — it's about the brave people who were willing to fight and who reached for the nearest technology; Twitter is a triumph of humanity, not technology. Even if you're uncomfortable with some content, you can be proud that you're supporting freedom of speech.”

“Social responsibility should be taken into consideration at the very beginning; startups are uniquely positioned to build 'doing good by doing well' into their model. I hired a corporate social responsibility person two years before we hired our first salesperson — the future of marketing is philanthropy.”

“I got a sense from that place that if they had an ordered list a very short one it went number one technology number two people — and that wasn't my thing.”

The summary and quote tags on this profile are produced with AI assistance from verified, first-person interview transcripts, then checked by our team to confirm the speaker's identity and the accuracy of every quote. See how we verify →