Zen

Zen is a school of Mahayana Buddhism which originated in China during the 6th century CE as Chán. From China, Zen spread south to Vietnam, to Korea and east to Japan. The word Zen is from the Japanese pronunciation of the Middle Chinese word 禪 Dzyen (Modern Mandarin: Chán), which in turn is derived from the Sanskrit word dhyāna, which can be approximately translated as "absorption" or "meditative state". Zen emphasizes the personal expression of experiential wisdom in the attainment of enlightenment. As such, it de-emphasizes reliance on standardized theoretical knowledge of sutras, and favors direct understanding through zazen and interaction with an accomplished teacher. The teachings of Zen include various sources of Mahāyāna thought, especially Yogācāra, the Tathāgatagarbha Sutras and Hua-Yen. Also the Prajñāpāramitā literature[8] and, to a lesser extent, Madhyamaka have been influential.

Zen proverbs

The Gates of Paradise
A soldier named Nobushige came to Hakuin, and asked: "Is there really a paradise and a hell?"
"Who are you?" inquired Hakuin.
"I am a samurai," the warrior replied.
"You, a soldier!" exclaimed Hakuin. "What kind of ruler would have you as his guard? Your face looks like that of a beggar."
Nobushige became so angry that he began to draw his sword, but Hakuin continued: "So you have a sword! Your weapon is probably much too dull to cut off my head."
As Nobushige drew his sword Hakuin remarked: "Here open the gates of hell!"
At these words the samurai, perceiving the master's discipline, sheathed his sword and bowed.
"Here open the gates of paradise," said Hakuin.