出自

to come from

to go out / to come out / to occur / to produce / to go beyond / to rise / to put forth / to happen / (used after a verb to indicate an outward direction or a positive result) / classifier for dramas, plays, operas etc

variant of 出[chu1] (classifier for plays or chapters of classical novels)

self / oneself / from / since / naturally / surely

from the bottom of one's heart (idiom)

genius comes from hard effort / Genius is one percent inspiration and ninety-nine percent perspiration (Thomas Edison)