Summary
This quote suggests that everyone has flaws or weaknesses ("We are all ill"), yet it also implies that these flaws are recognized because there is an understanding of what constitutes good health or well-being. In other words, the existence of a universal sickness highlights the existence of an ideal state of being, such as physical or mental health. It implies that we have a yardstick against which we measure our imperfections, acknowledging that there is a standard or concept of health that we strive for, even if we may fall short of it.