No More Learning

At your approach ennui and anguish fly;
With your departure they return again:
But memory, on the past which doting dwells,
Denies them entrance then,
So that no outward act their influence tells;
Thus, if in me is nurst
Any good fruit, from you the seed came first:
To you, if such appear, the praise is due,
Barren myself till           by you.