Questions & Answers about Við tölum lágt í bókasafninu.
Við means we.
Yes, in a normal sentence like this, you usually include it. Even though the verb form tölum already shows we, Icelandic normally keeps the subject pronoun in ordinary statements.
So:
- Við tölum lágt = We speak quietly
- not usually just Tölum lágt unless the context is special, poetic, or elliptical
Tölum is the 1st person plural present form of the verb tala, which means to speak or to talk.
The pattern is:
- ég tala = I speak
- þú talar = you speak
- við tölum = we speak
So the ending -um here tells you the subject is we.
Also notice that the stem vowel changes slightly: tala → tölum. This kind of vowel change is common in Icelandic verb forms.