I think myself that it is a page from some private diary.

Each one is like an intimate conversation or entry in a private diary.

The "evidence" consisted of two personal entries in his private diary.

The detailed private diary that he kept from 1660-1669 was first published in the nineteenth century.

From 1930 through 1948, Mencken kept a private diary, which, under the terms of his will, was released in 1981.

But unknown to the man in charge, Reynolds kept a second private diary as well, and it is used here to great advantage.

Norton's journal was not a private diary, but rather intended for publication.

At the end of the war, Strauss wrote in his private diary:

He is mainly famous for his set of private diaries from the years 1736 to 1761 which portray life in 18th century India.

Sharon got really angry when she found out her mother had been reading her private diary.