What's the meaning?
"He took large risks, the kind one does not take unless one has to."

thanks.Now, reading again, it became clear. Thank you both.

Question

What's the meaning?
"He took large risks, the kind one does not take unless one has to."

thanks.Now, reading again, it became clear. Thank you both.

Answer

Lalisoki gave the right answer.  
Example:  The movie producer took a large risk by hiring an unknown actor to play the leading role in his film. 
He had to do take this risk because he lacked the money to hire a well-known actor to play the part.

Answer

I think that it means that this person took some risks which we take just when we're obliged.
But I'm not really sure if what I said is correct

Evden çıkmadan dil öğrenme fırsatını kaçırmayın. Deneyimli dil eğitmenlerimizden oluşan seçkimize göz atın ve ilk dersinize şimdi kaydolun!