Man is concentric: you have to take fold after fold off of him before you get to the centre of his personality. You must get below his animal nature, habits, customs, affections, daily life, and sometimes go away down into the heart of the man, before you know what is really in him. But when you get into the last core of these concentric rings of personality you find a sense of the infinite--a consciousness of immortality linked to something higher and better.
E. H. CHAPIN, Living Words
Humans are different in private than in the presence of others. While the private persona merges into the social persona in varying degrees, the union is never complete. Something is always held back.
BRIAN HERBERT & KEVEN J. ANDERSON, Dune: House Corrino
The really valuable thing in the pageant of human life seems to me not the State but the creative, sentient individual, the personality; it alone creates the noble and the sublime, while the herd as such remains dull in thought and dull in feeling.
ALBERT EINSTEIN, The World as I See it