Historians say the trial formed the beginning of the legal idea that a statement is not libelous if it can be proven true.

VOA: special.2009.04.20

And so there is this critical school that says, "I won't believe anything unless it is proven to me."

有批评家指出,"我不会相信没有证据的历史"

耶鲁公开课 - 古希腊历史简介课程节选

So if you guys have had-- many health professionals say that there's not enough nutrition education out there, that most people don't learn it in the schools, people aren't getting it so much from families because families don't know a lot about nutrition, but the fact is you've had a lot of nutrition education and you've just proven it.

也许大家听说过,很多健康专家声称,现在的营养教育很匮乏,许多人在学校里学不到这方面的知识,在家里也得不到多少这类信息,因为很多家长对营养一知半解,但事实上你们已接受了大量的营养知识,刚才你们已经证明了这点

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"It is crucial that national authorities do not rush to give information on source of infection which is not proven by bacteriological analysis, as this spreads unjustified fears in the population all over Europe, and creates problems for our food producers selling products in the EU and outside of the EU."

VOA: special.2011.06.10

"It is going to meet it with proven technology that will cover more of Europe, including Poland, and it will do it more efficiently than the previous system could have or did."

VOA: standard.2009.10.21