A Teacher Remembers His Students
Humility
Rav Ruderman often cited the verse in Doniel, “And those who make others wise will shine like the brightness of the sky, and those who bring many to righteousness like the stars forever and ever,” as a sign of his love and pride in talmidim who became teachers of Torah. He would quote the Maharsha’s explanation that the stars and the moon remain overhead all day though no one sees them, and so too a teacher remembers and thinks about his students even years later.
Source: Doniel 12:3, with the Maharsha, as cited by Rav Ruderman