Absolute integrity

From “John Dalton – The Father of Chemistry“, on The Science Show:

[Dalton] had the usual Quaker concern with integrity. When a good student of his needed a note to say he had attended every lecture, although he had missed one, Dalton is reported as saying, ‘If thou wilt come tomorrow, I will give the lecture thou hast missed’. He was prepared to go to the trouble to repeat the lecture for one student so he could honestly say that the student had attended every lecture.