巧遅は拙速に如かず　Kouchi wa sessoku ni sikazu, words by Sun Tzu , a Chinese tactical thinker of the 5th century BC. Sun Tzu is pronounced Sonsi in Japanese.
Literal meaning can be: In a fight, it is better to win in a short time than in a long time, even if the fight is not perfect.
Connotation can be: It is not good to fight for a long time with clever tactics.