"Those who cannot understand how to put their thoughts on ice should not enter into the heat of debate"

This quote by Friedrich Nietzsche recommends that individuals who are not able to control their feelings during a dispute or argument ought to prevent taking part altogether. If one can not remain calm and rational, they will likely not make valuable contributions to the discussion and might even make the situation worse. The expression "putting their thoughts on ice" suggests a level of detachment and neutrality that is necessary for efficient dispute.