To harbor hatred and animosity in the soul makes one irritable, gloomy, and prematurely old. [ Auerbach ]

A man or a woman may be highly irritable, and yet be sweet, tender, gentle, loving, sociable, kind, charitable, thoughtful for others, unselfish, generous. [ Charles Buxton ]

The wise will determine from the gravity of the case; the irritable, from sensibility to oppression; the high-minded, from disdain and indignation at abusive power in unworthy hands. [ Burke ]

Intellect alone, however exalted, without strong feelings - without even, irritable sensibility - would be only like an immense magazine of powder, if there were no such element as fire in the natural world. It is the heart which is the spring and fountain of all eloquence. [ Lord Erskine ]