Final answer:
Unable to provide an answer without the correct context from the novel 'The Plague' by Albert Camus, which features the characters Dr. Rieux and Tarrou.
Step-by-step explanation:
The question asks for a summary of what Dr. Rieux and Tarrou did after having a discussion on the terrace. However, the text provided does not give specific details about their actions following their terrace conversation, instead providing a collection of unrelated excerpts from various texts.
Without the context from the novel 'The Plague' by Albert Camus, which features characters Dr. Rieux and Tarrou, it is impossible to accurately answer the student's question based on the excerpts provided. Therefore, I am unable to provide a factually correct response to this question.