Questions & Answers about Ich vertraue mir selbst.
Because vertrauen takes a dative object, not an accusative one.
- mir = 1st person singular dative (to me)
- mich = 1st person singular accusative (me)
Some verbs in German naturally take the dative for the person being affected. vertrauen is one of them:
- Ich vertraue dir. – I trust you. (dir = dative)
- Wir vertrauen unserem Lehrer. – We trust our teacher. (unserem Lehrer = dative)
So when you trust yourself, you must also use the dative:
- Ich vertraue mir (selbst). – I trust myself.
Grammatically, mir is the dative personal pronoun for 1st person singular, but in this sentence it functions like a reflexive pronoun.
German has special reflexive pronouns (mich, dich, sich, uns, euch, sich) that are used mainly in the accusative, and sometimes in the dative. In the 1st and 2nd person, these forms are identical to the normal personal pronouns.
So:
- Formally: mir is just the normal dative pronoun for ich.
- Functionally here: it refers back to the subject ich, so it behaves reflexively (= I trust myself).
That’s why learners often just call this use “reflexive,” even though no special reflexive form appears.