Grosseteste was the first of the Scholastics to fully understand Aristotle 's vision of the dual path of scientific reasoning: generalising from particular observations into a universal law, and then back again from universal laws to prediction of particulars. Therefore, scientific knowledge was demonstrative knowledge of things through their causes. Grosseteste called this "resolution and composition". So, for example, looking at the particulars of the moon, it is possible to arrive at universal laws about nature. Conversely once these universal laws are understood, it is possible to make predictions and observations about other objects besides the moon. Grosseteste said further that both paths should be verified through experimentation to verify the principles involved. These ideas established a tradition that carried forward to Padua and Galileo Galilei in the 17th century.