It was taught: On that day that they removed Rabban Gamliel from his position and appointed Rabbi Elazar ben Azarya in his place, there was also a fundamental change in the general approach of the study hall as they dismissed the guard at the door and permission was granted to the students to enter. Instead of Rabban Gamliel’s selective approach that asserted that the students must be screened before accepting them into the study hall, the new approach asserted that anyone who seeks to study should be given opportunity to do so. As Rabban Gamliel would proclaim and say: Any student whose insides are not like their outside may not enter the study hall.
(7) For the lips of a priest guard knowledge, And men seek rulings from his mouth; For he is a messenger of the LORD of Hosts.
ור"מ היכי גמר תורה מפומיה דאחר והאמר רבה בר בר חנה אמר רבי יוחנן מאי דכתיב (מלאכי ב, ז) כי שפתי כהן ישמרו דעת ותורה יבקשו מפיהו כי מלאך ה' צבאות הוא אם דומה הרב למלאך ה' צבאות יבקשו תורה מפיהו ואם לאו אל יבקשו תורה מפיהו... כי אתא רב דימי אמר אמרי במערבא ר"מ אכל תחלא ושדא שיחלא לברא
The Gemara poses a question: And Rabbi Meir, how could he learn Torah from the mouth of Aḥer? But didn’t Rabba bar bar Ḥana say that Rabbi Yoḥanan said: What is the meaning of that which is written: “For the priest’s lips should keep knowledge, and they should seek Torah from his mouth; for he is an angel of the Lord of hosts” (Malachi 2:7)? The verse teaches: If the rabbi is similar to an angel of the Lord of hosts, perfect in his ways, they should seek Torah from his mouth; but if not, they should not seek Torah from his mouth.... When Rav Dimi came from Eretz Yisrael to Babylonia, he said: In the West, Eretz Yisrael, they say: Rabbi Meir ate a half-ripe date and threw the peel away....
Martin Heidegger, The Essence of Truth
...the errancy through which human beings stray is not something that, as it were, extends alongside them like a ditch into which they occasionally stumble; rather, errancy belongs to the inner constitution of the [existence] into which historical human beings are admitted.
Hannah Arendt, Eichmann in Jerusalem
The trouble with Eichmann was precisely that so many were like him, and that the many were neither perverted nor sadistic, that they were, and still are, terribly and terrifyingly normal. From the viewpoint of our legal institutions and of our moral standards of judgment, this normality was much more terrifying than all the atrocities put together.