Definition: insightful and penetrating; keen and discerning; exhibiting combined shrewdness, perspicacity, and diplomacy

Derivation: Latin, “crafty”

Synonyms: critical, sagacious, subtle

Consequential Qualities: artful, tactful

• When you have an elephant by the hind legs and it is trying to run away, it is best to let it run. — Abraham Lincoln (1809-1865) 16th President of the United States
• As soon as we step beyond the established boundaries of pure thermodynamic theory, we enter a trackless region confronting us with obstacles which even the most astute of us are almost at a loss to tackle. — Wilhelm Carl Werner Otto Fritz Franz Wien (1864–1928) German physicist