Yoga, Vaisheshika, and Sankhya are three of the six orthodox schools of
Hindu speculative thought (vs. the heterodox schools of Charvaka, Buddhism,
and Jainaism, which deny the authority of the Vedas). They offer different
accounts of what is discoverable by experience and reason, with
accommodations of Vedic authority to these accounts.
Dhammapada ( "dhamma" is the Pali equivalent of the Sanskrit "dharma," hence "path of dharma")--Buddhist ethics.
The Questions of King Milinda--Questions about possible inconsistencies in Buddhist teaching, posed by King Milinda to the sage, Nagasena, and answered.
Wana Yang Mingintuitionist neo-Confucianism.
Dogen was the founder of Soto Zen. The Shobo-Genzo consists of short inspirational lectures given to his students at the Zen monastery.
The Narrow Road to the Deep North--Zen travelogue by the greatest of the haiku poets.