目的のためには手段を選ばない
Meanings
1
the end justifies the means; willing to do anything to achieve one's goal
A set phrase describing a person who will use any method, fair or unfair, to accomplish their objective. Often carries a negative connotation.
See also: 手段を選ばずに
He's the type who believes the end justifies the means.
A method that uses any means to achieve the goal will ultimately lose trust.