On the cusp of new things

Before the clouds of epistemic arrogance set forth largely across the land,let me know.
O I know of you,and you are a menace,the 'Casper-the friendly ghost' of the ilk
A well meaning older brother who chastises and gives a timely well-aimed blow
The toiling student rejoices in small victories
And you smile back warily, fully aware of the vagaries of one's knowledge
Grant me the wisdom to not measure wisdom by the days spent in pursuit of some goal
For the greatest lesson is of love and the good one can do.