Come, you spirits/That tend on mortal thoughts (1.5.46)
i.e., Come, you spirits that are responsible for murderous thoughts.
For more on this passage please see the annotations at the bottom of the main page of Macbeth 1.5
How to cite this article:
Mabillard, Amanda. Macbeth Glossary. Shakespeare Online. 20 Aug. 2000. (date when you accessed the information) < http://www.shakespeare-online.com/plays/macbeth/macbethglossary/macbeth1_1/macbethglos_tend.html >.