in Thoreau’s Journal:

A journal is a record of experiences & growth–not a preserve of things well done or said. I am occasionally reminded of a statement which I have made in conversation & immediately forgotten–which would read much better than what I put in my journal. It is a ripe dry fruit of long past experience which falls from me easily without giving pain or pleasure– The charm of the journal must consist in a certain greenness–though freshness–& not in maturity. Here I cannot afford to be remembering what I said or did–my scurf cast off–but what I am & aspire to become.