90. pious drops. Tears which are due to the dying (Lat. pius, dutiful). It soothes the dying to know that some-one is weeping for their loss.
91. Even the dead seem to cry out for remembrance.
93. thee. The poet is addressing himself.
94. artless. Simple, without deceit.
97. Haply. Perhaps. Swain. Country man, rustic.
105. smiling. Modifies he, l. 106.
108. Or . . or. Either . . or, a poetical form.
123. Science. Knowledge, in the wide sense of the word.
126-8. His merits and his weaknesses are both alike left in the hands of God.
dread abode. Explained by the last line, which is in apposition.