[Happy]

NTs are introspective, logical and on a constant quest for knowledge. They are practical and unsentimental in their approach to problem solving. The actions of an NT are precise and follow a systematic course. Abstract, theoretical and technically adept, NTs are naturally inventive. They can also be described as being analytical, intellectual, inquisitive, independent and complex.

-http://www.mypersonality.info/personality-types/nt-temperament/