"I am looking back, trying to reflect upon my accomplishments, as well as the professional experiences and insights that I gained over the years as a: (1) chemistry teacher, (2) regional consultant for chemistry teachers, (3) deputy of the chief chemistry teachers' superintendent, (4) head of the National Center for Chemistry Teachers, and (5) researcher."

"I was a high-school chemistry teacher for 26 years, immediately after finishing my military reserves service in the framework of academia."

"Unlike other publishers, Elsevier makes all the retracted articles on ScienceDirect free in full text open access format. That means that anyone can download and read them. Since the vast majority of Elsevier articles are not open access, it is a bit strange that they choose to have retracted articles completely open access."

"The authors of retracted articles gain the most out of the continuous readership and citations of their articles. We should all remember that an author’s h-index score does not distinguish between positive and negative citations. Therefore, even if a retracted article is negatively cited, the citations counts are still calculated towards a higher h-index. In addition, the references appearing on retracted articles also gain since they are too counted towards total citations."

"In 2017 we recommended already that they change this practice and place retracted articles behind a paywall. We have to remember that there are institutions and countries who cannot afford to buy Elsevier content. These institutions rely on open access resources for their academic and scientific work. Therefore, Elsevier has to ensure that retracted articles are not easily accessible. These articles often represent erroneous research in forms of falsified data and findings. Elsevier should make them harder rather than easier to access."

"What does the strange irrational hatred called antisemitism consist of? I am not a historian of this vast topic, but personally I define it as the theory that holds Jews responsible for the spilling of the blood of non-Jews."

"The idea that Jews threaten the world is deeply embedded in Western culture, so deeply in fact, that this category is automatically evoked when the Israeli state sometimes breaks the law, as many states around the world do. There is no doubt that in recent decades, Israel has acted in defiance of international law (and its own as well) and that its military response in Gaza has been disproportionate. But I have trouble believing that under the same circumstances other countries would have acted differently."

"Maybe the Jews interfered in the American elections, maybe the Jews control the world, maybe Jews slaughtered the Jews in Poland. For all those allegations, there is one origin: Jew-hatred"