słusznie

1. properly, rightly, correctly
2. justly, fairly, rightfully

mówią

third-person plural present of mówić

że

• Conj

  introduces a subordinate clause; that

• Particle

snom

dative plural of sen

wierzyć

1. to believe (to accept as true, particularly without absolute certainty)
2. to believe (to accept that someone is telling the truth)
3. to believe in (to have confidence in the ability or power of)
4. to believe in (to believe that something is right or desirable)
5. to believe (to have religious faith; to believe in a greater truth)
6. (obsolete) to confide in; to confess

nie

• Particle

  negation particle; no, not

• Verb
• Pron

trzeba

1. expresses the goodness of the following verb; it is needed, one ought to
2. expresses the naturalness or obviousness of the following verb; ought to, must
3. expresses the necessity or obligation of the following verb; it is needed, one ought to