Article 2, Section 2, Clauses 2 and 3
William Blackstone, Commentaries 1:2621765
From the same principle also arises the prerogative of erecting and disposing of offices: for honours and offices are in their nature convertible and synonymous. All offices under the crown carry in the eye of the law an honour along with them; because they imply a superiority of parts and abilities, being supposed to be always filled with those that are most able to execute them. And, on the other hand, all honours in their original had duties or offices annexed to them: an earl, comes, was the conservator or governor of a county; and a knight, miles, was bound to attend the king in his wars. For the same reason therefore that honours are in the disposal of the king, offices ought to be so likewise; and as the king may create new titles, so may he create new offices: but with this restriction, that he cannot create new offices with new fees annexed to them, nor annex new fees to old offices; for this would be a tax upon the subject, which cannot be imposed but by act of parliament. Wherefore, in 13 Hen. IV, a new office being created by the king's letters patent for measuring cloths, with a new fee for the same, the letters patent were, on account of the new fee, revoked and declared void in parliament.
The Founders' Constitution
Volume 4, Article 2, Section 2, Clauses 2 and 3, Document 35
The University of Chicago Press
Blackstone, William. Commentaries on the Laws of England: A Facsimile of the First Edition of 1765--1769. Chicago: University of Chicago Press, 1979.
Easy to print version.