Which sentence is punctuated correctly?

“Understand yourself, and you will understand everything, said Shunryu Suzuki.
Understand yourself, and you will understand everything, said Shunryu Suzuki.
“Understand yourself, and you will understand everything,” said Shunryu Suzuki.
“Understand yourself, and you will understand everything, said Shunryu Suzuki.”

Question

Which sentence is punctuated correctly?

 	
	“Understand yourself, and you will understand everything, said Shunryu Suzuki.
	Understand yourself, and you will understand everything, said Shunryu Suzuki.
	“Understand yourself, and you will understand everything,” said Shunryu Suzuki.
	“Understand yourself, and you will understand everything, said Shunryu Suzuki.”

anonymous · Answer

i want to say its the 3 one but im not sure

anonymous · Answer

Its the third one