obsession;  unreasonable but compulsive idea
 conceptual;  ideational;  notional;  theoretical;  academic
 fixed idea;  idée fixe;  stereotype;  prejudice
 sense of morality;  moral sense
 ideation;  process of forming and relating ideas;  to ideate
 association (e.g. of two concepts)
 innate idea;  innate ideas
 fixed idea;  idée fixe;  obsession;  fixation
 the orientation of time and place;  awareness of the existing situation
 innate idea;  innate ideas
 acquired idea (as opposed to innate);  acquired ideas
 contemplation (on Amida Buddha, the Pure Land, etc.)