This quote by Francis Bacon suggests that science is a representation of the reality, but not always the reality itself. He indicates that science is a tool to assist us understand the world around us, however it is not the only way to acquire knowledge. Bacon recommends that science is limited in its capability to offer us with a complete understanding of the fact, and that other kinds of knowledge, such as viewpoint, religion, and art, can also offer us with insight into the reality. He encourages us to check out all kinds of understanding in order to acquire a more detailed understanding of the reality. Ultimately, Bacon's quote encourages us to think critically and to check out all forms of knowledge in order to get a more total understanding of the fact.
