He entered Congress, therefore, with apparent advantages and in the full maturity of his powers, at forty-nine years of age.
-- General Butler had long been regarded as a powerful antagonist at the bar and he fully maintained his reputation in the parliamentary conflicts in which he became at once involved.

He exhibited an extraordinary capacity for agitation, possessing in a high degree what John Randolph described as the "talent for turbulence." His mind was never at rest.

While not appearing to seek controversies, he possessed a singular power of throwing the House into turmoil and disputation.
The stormier the scene, the greater his apparent enjoyment and the more striking the display of his peculiar ability.

His readiness of repartee, his great resources of information, his familiarity with all the expedients and subtleties of logical and illogical discussion, contributed to make him not only prominent but formidable in the House for many years.

He was distinguished by habits of industry, had the patience and the power required for thorough investigation, and seemed to possess a keen insight into the personal defects, the motives, and the weaknesses of his rivals.