The sign of a good marriage is that everything is debatable and challenged; nothing is turned into law or policy. The rules, if any, are known only to the two players, who seek no public trophies.
It would be like describing colors to someone blind from birth: The words might be understood, but the concept would remain mysterious and private.
And then there is our personal history. Memories only we share. Things not another living soul would understand.
Some men's wit is like a dark lantern, which serves their own turn and guides them their own way, but is never known (according to the Scripture phrase) either to shine forth before men, or to glorify their Father in heaven.
What we know of others is our personal secret.
Our spirits have their own private way of understanding each other, of becoming intimate, while our external persons are still trapped in the commerce of ordinary words, in the slavery of social rules. Souls have their own needs and their own ambitions, which the body ignores when it sees that it's impossible to satisfy them or achieve them.
It’s a really exciting moment when you know something about the whole world that nobody else does.
See related quote for another scientist with a first discovery.
The feeling of understanding is as private as the feeling of pain. The act of understanding is at the heart of all scientific activity; without it any ostensibly scientific activity is as sterile as that of a high school student substituting numbers into a formula. For this reason, science, when I push the analysis back as far as I can, must be private.