that which makes a thing what it is; most important or indispensable quality of thing
extract of a plant, drug, etc. containing all its important qualities in concentrated form
"the gist of the prosecutor's argument"
"the heart and soul of the Republican Party"
"the nub of the story"
The whole tradition is in its essence monastic.
出自： N. Mitford
He is neither cannibal nor laundryman, these are mere names, they do not touch his essence.
出自： J. M. Coetzee