I sometimes find|邓布利多 - 火焰杯

"I sometimes find, and I am sure you know the feeling, that I simply have too many thoughts and memories crammed into my mind.... At these times... I use the Pensieve. One simply siphons the excess thoughts from one's mind, pours them into the basin, and examines them at one's leisure."

—— Albus Dumbledore, Harry Potter and The Goblet of Fire