Knowledge is the be all and end all for Faustus early on. To know is to be divine. Look, for example, at these lines from the first scene:
Settle thy studies, Faustus, and begin
To sound the depth of that thou wilt profess;
Having commenced, be a divine in show,
Yet level at the end of every art,
And live and die in Aristotle's works.(5)
Sweet Analytics, 'tis thou hast ravished me!
If you live and die in Aristotle, you live to study the great works of man. If a philosophical work has "ravished" you, your desire for knowledge is passionate. And the suggestion of divinity indicates that to know is to become like a god.