He had two lives: one, open, ...

He had two lives: one, open, seen and known by all who cared to know, full of relative truth and of relative falsehood, exactly like the lives of his friends and acquaintances; and another life running its course in secret. And through some strange, perhaps accidental, conjunction of circumstances, everything that was essential, of interest and of value to him, everything in which he was sincere and did not deceive himself, everything that made the kernel of his life, was hidden from other people.
He had two lives: one, open, seen and known by all who cared to know, full of relative truth and of relative falsehood, exactly like the lives of his friends and acquaintances; and another life running its course in secret. And through some strange, perhaps accidental, conjunction of circumstances, everything that was essential, of interest and of value to him, everything in which he was sincere and did not deceive himself, everything that made the kernel of his life, was hidden from other people.

Quotes from the same author

Love, friendship and respect do not unite people as much as a common hatred for something.
People don't notice whether it's winter or summer when they're happy.
Knowledge is of no value unless you put it into practice.
My mother and father are the only people on the whole planet for whom I will never begrudge a thing. Should I achieve great things, it is the work of their hands; they are splendid people and their absolute love of their children places them above the highest praise. It cloaks all of their shortcomings, shortcomings that may have resulted from a difficult life.
To a chemist, nothing on earth is unclean. A writer must be as objective as a chemist; he must abandon the subjective line; he must know that dungheaps play a very respectable part in a landscape, and that evil passions are as inherent in life as good ones.