a plan, thought, or suggestion for a possible course of action
a picture in the mind
knowledge or understanding
"it was not a good idea"
"the thought never entered my mind"
"he had in mind to see his old teacher"
"the idea of the game is to capture all the pieces"
"he has an idea that we don't like him"
"an estimate of what it would cost"
"a rough idea how long it would take"
"the theme is announced in the first measures"
"the accompanist picked up the idea and elaborated it"
Thou [Lucifer] shalt be an Idea to all souls..whence to mark despair.
出自： E. B. Browning