You had to go into politics if you wanted to change the world. (BNCI)
It is worth remembering that, when Indira asked Rajiv to go into politics after his elder brother's death in 1980, he put out a statement saying that he had no such intention.(BNCI)
She gave the young MacGregor a book on Parliament but he did not read it at the time, and he cannot trace his decision to go into politics back to that. (BNCI)