"Until 1943 I received no stipend. I was able to support myself as my mother was the daughter of a relatively wealthy cotton manufacturer"

This quote by Frederick Sanger is a testament to his effort and devotion to his research studies. He had the ability to support himself economically till 1943 with no stipend, which recommends that he had the ability to find other sources of income. This could be interpreted as an indication of his resourcefulness and determination to pursue his research studies. It is likewise likely that his mother's background as the child of a rich cotton manufacturer played a role in his capability to support himself. This recommends that his family had some financial stability, which enabled him to concentrate on his studies without having to worry about cash. In general, this quote is a testament to Frederick Sanger's hard work and devotion to his research studies, as well as his family's financial stability.