"My pessimism extends to the point of even suspecting the sincerity of other pessimists"

This quote by Jean Rostand speaks with the idea of cynicism and wonder about. It suggests that Rostand's pessimism is so strong that he even questions the sincerity of other pessimists. This might be interpreted as a commentary on the human condition, that even in the face of shared suffering, we are still unable to trust one another. It could also be seen as a warning versus the dangers of cynicism, as it can lead to a lack of trust and connection with others. Eventually, this quote speaks to the concept that even in the darkest of times, it is very important to keep a sense of hope and rely on others.