Questions & Answers about Dla niego każda porażka to doświadczenie, a nie problem.
Why is the pronoun niego used after dla, and not on?
The preposition dla (for) governs the genitive case. In Polish, the genitive of on is niego, so dla niego is the correct form.
What is każda, and why does it match porażka this way?
Każda is an indefinite adjective meaning “every” or “each.” It must agree in gender, number, and case with the noun porażka (feminine singular nominative), hence każda porażka.
What is the function of to in this sentence? Is it the demonstrative “this”?
Why are doświadczenie and problem in the nominative case instead of the instrumental?
In the nominative + to + nominative construction, both nouns remain in the nominative. If you switch to using jest, you must use the instrumental:
Dla niego każda porażka jest doświadczeniem, a nie problemem.