Nothing ventured, nothing gained

Definitions:
CD: You have to take a risk in order to get something good.
MW: used to say that it is worth trying to do something because one might succeed even though success is not certain
WK: If one takes no risks, one will not gain any benefits.

Examples:
- Go on, apply for the job. You know what they say — nothing ventured, nothing gained.
- Bill: Should I ask my boss for a promotion?
  Jane: Nothing ventured, nothing gained. I think I'll audition for a part in that play. Nothing ventured, nothing gained.
- A: "I'm thinking of asking my bosses for a raise, but I'm a little bit nervous."
  B: "Hey, nothing ventured, nothing gained." It was a bit of a shot in the dark taking a job in a different country, but nothing ventured, nothing gained!