מִֽי־יִתֵּ֣ן טָ֭הוֹר מִטָּמֵ֗א לֹ֣א אֶחָֽד׃
誰能使潔淨的出於污穢的呢？一個也沒有。
Zohar
a mystery which is expressed in the words: “a clean thing out of an unclean” (Job 14, 4). The brain is contained in a shell, a shell which will not be broken until that time when the dead shall rise again. Then will the shell be broken and the light shine out into the world from the brain, without any covering on it. Blessed are the righteous in this world and in the world to come.’