Famous saying ???

Question

how does the following quote end " for one to succeed the other must ............." or something like that, like somebody said that for one to be succesfull the other one must be destroyed or something, PLEASE give me the sentence or the quote in full answer, first CORRECT answer will get 5 stars :)

Answer 1

For one to succeed, the other must fail..." holds when there is an "other" with whom one is competing.  Then it is truly a zero-sum game in which what one wins the other loses.

Many situations, however, are not zero-sum and can be win-win where both parties are better off although the winner's position is preferable. Even there, sometimes the prize to be won is negative, a fact which is invariably discovered after the fact.

Answer 2

For one to succeed the other must sacrifice