Sagacious
Sagacious , adjective
[Latin sagax, sagacis, akin to sagire to perceive quickly or keenly, and probably to English seek. See Seek, and compare Presage.]
1.
Of quick sense perceptions; keen-scented; skilled in following a trail.
Sagacious of his quarry from so far.
2.
Hence, of quick intellectual perceptions; of keen penetration and judgment; discerning and judicious; knowing; far-sighted; shrewd; sage; wise; as, a sagacious man; a sagacious remark.
Instinct... makes them, many times, sagacious above our apprehension.
Only sagacious heads light on these observations, and reduce them into general propositions.