DOGEN ZENJI
(1200 – 1253)
To study the Buddha way is to study the self.
To study the self is to forget the self.
To forget the self is to be enlightened by the ten thousand things [i.e., everything].
To be enlightened by the ten thousand things is to free one’s body and mind, and those of others. 
MEISTER ECKHART
(1260 – 1328)
Begin therefore with yourself and forget yourself. Truly, if you do not begin by getting away from yourself, then wherever you flee to, you will find obstacles and trouble no matter where it is. If people seek peace in outward things, whether in places or in methods or in people or in deeds or in banishment or in poverty or in humiliation, however great or of whatever kind all this may be, this is all in vain and brings them no peace. Those who seek thus seek wrongly; the further they go the less they find what they are seeking. They are like a man who has taken a wrong turning: the further he goes, the more he goes astray. But what should he do? He should resign himself to begin with, and then he has abandoned all things. In truth, if a man gave up a kingdom or the whole world and did not give up self, he would have given up nothing. But if a man gives up himself, then whatever he keeps, wealth, honour or whatever it may be, still he has given up everything.