There is a deceiving assumption in your phrasing of the question, for what you learn you learn in your own way so that what you think can both be what you've learned and the uniquely personal way you learned and assimilated it to your other knowledge. Further, since our stock of existing learning is always different in some way from that of every other person that too adds a personal uniqueness to our thoughts.
Hannah Arendt once noted how odd it is, what each one remembers and doesn't remember in the same circumstances. See her 2-volume "Life of the Mind".
