Note 2 — Section 1. A GOOD MAXIM[1].
Reading edition
to begin, an´fangen. When the Infinitive is used either subjectively or objectively, it is generally preceded by the preposition zu, and is called Supine. Comp. S. 78, N. 14, 1. To form the Supine Present of compound separable verbs, like an´fangen, we must place the preposition zu between the separable prefix and the verb. The Supine must be used here. See App. § 1.