WordNet sense 1 (an important intellectual):

thinker, creative thinker

WordNet sense 2 (your intention; what you intend to do):

idea

WordNet sense 3 (an opinion formed by judging something):

judgment, judgement

WordNet sense 4 (knowledge and intellectual ability):

intellect

WordNet sense 5 (that which is responsible for one's thoughts and feelings; the seat of the faculty of reason):

brain, head, psyche, nous

WordNet sense 6 (pay close attention to; give heed to):

heed, listen

WordNet sense 7 (be in charge of or deal with):

take care

WordNet sense 8 (be on one's guard; be cautious or wary about; be alert to):

beware

WordNet sense 9 (keep in mind):

bear in mind