| insight(noun, feeling, understanding, knowledge, mind) |
| intellect(noun, feeling, understanding, mind, intelligence) |
| intensity(noun, drive, power, strength, energy) |
| intestinal fortitude(noun, expression, drive, power, strength) |
| intrepidness |
| inventiveness(noun, creativity, originality, cleverness, initiative) |
| judiciousness(noun, understanding, knowledge, reason, sense) |
| knowledge(noun, feeling, understanding, mind, reason) |
| learning(understanding, knowledge, sense, caution, wisdom) |
| levelheadedness(knowledge, reason, sense, intelligence, wisdom) |
| linchpin |
| logic(noun, knowledge, reason, sense, intelligence) |
| lynchpin |
| mentality(noun, feeling, understanding, spirit, mind) |
| momentum(noun, drive, power, strength, push) |
| motivation(noun, drive, push, energy, vigor) |
| motive(noun, drive, push, energy, determination) |
| pansophy(understanding, knowledge, sense, caution, wisdom) |
| penetration(understanding, knowledge, sense, caution, wisdom) |
| pep(noun, drive, push, energy, vigor) |