But time and circumstance have made her change her words.
July 11, 2016, while candidate for Conservative Party leader: "Brexit means Brexit and we're going to make a success of it."
July 13, 2016, in her first speech as prime minister: "As we leave the European Union, we will forge a bold, new, positive role for ourselves in the world."
January 17, 2017: "After all the division and discord, the country is coming together."
March 29, 2017, triggering the two-year countdown to departure under EU rules: "This is an historic moment from which there can be no turning back."
December 15, 2017: "What people voted for last year was for us to leave the European Union and we will leave the EU on 29 March 2019."
December 20, 2017: "We are very clear — we will be leaving the EU on 29 March 2019 at 11 p.m."
November 18, 2018: "I'm clear people voted for us to leave. We will leave and will leave on 29 March 2019."
February 7, 2019: "I'm clear that I am going to deliver Brexit. I am going to deliver it on time."
February 24, 2019: "We still have it within our grasp to leave the European Union with a deal on 29 March."
March 20, 2019: "Two years on, MPs have been unable to agree on a way to implement the UK's withdrawal. As a result we will now not leave on time with a deal on the 29th March. This delay is a matter of great personal regret for me."
March 27, 2019: "I know there is a desire for a new approach - and new leadership - in the second phase of the Brexit negotiations — and I won't stand in the way of that."