"So companies have to be very schizophrenic. On one hand, they have to maintain continuity of strategy. But they also have to be good at continuously improving"

This quote by Michael Porter suggests that business need to have the ability to balance 2 apparently contradictory goals. On one hand, they must preserve a constant strategy in order to stay effective and competitive. On the other hand, they need to also be able to continuously enhance and innovate in order to remain ahead of the competition. This needs business to be "schizophrenic" in their approach, suggesting they must have the ability to change in between 2 different frame of minds in order to attain success. Business need to have the ability to maintain a constant method while also having the ability to adjust and innovate in order to remain competitive. This quote emphasizes the significance of having the ability to balance both of these goals in order to stay successful.