In an interview with Sky Sports News, Blatter praised Kevin-Prince Boateng for leading AC Milan off after being abused during a friendly last week - but he maintains this is not a long-term solution to ending discrimination.
"You remember the Boateng problem, with him running away," said Blatter. "I made a comment on that and I still have the same feeling.
"It is good what he has done, it is good to have this impact - to say look what has happened - but it cannot be a solution.
"You can never solve any problem in your private life or your economic life by running away.
"Listen, it was a warning, if you don't take care of our sport we will do it. It was a warning but it can't be the solution
"We will make a summit with all the players concerning racism and discrimination. Then there must be a lot of solidarity and understanding. We have to eradicate it.
"It can only be done if all the players are participating, and the players are also the spectators."
You can see the full interview with Sepp Blatter on our Special Report - the FIFA President talks in-depth about racism, England and life after football. See it on Monday at 7.00pm on Sky Sports News HD