In Siddhartha, knowledge is differentiated from wisdom in that knowledge is rather run-of-the-mill and wisdom is prized. Knowledge can be transmitted from teacher to pupil, and it’s useful, but in Siddhartha, knowledge is ultimately unsatisfactory. Their approaches to knowledge are also the most important distinction between Siddhartha and Govinda. Siddhartha learns everything and goes, "OK, now what?" while Govinda placidly continues to learn the proffered doctrine.
Siddhartha’s relationship with Kamala is that of teacher and student.
Knowledge is not valued in Siddhartha, only wisdom.