The atmosphere of orthodoxy is always damaging to prose, and above all it is completely ruinous to the novel, the most anarchical of all forms of literature.
— George Orwell

For nearly five years the present Ministers have harassed every trade, worried every profession, and assailed or menaced every class, institution, and species of property in the country. Occasionally they have varied this state of civil warfare by perpetrating some job which outraged public opinion, or by stumbling into mistakes which have been always discreditable, and sometimes ruinous. All this they call a policy, and seem quite proud of it; but the country has, I think, made up its mind to close this career of plundering and blundering.
Benjamin Disraeli ruinous quote

We who have seen Italia in the throes,Half risen but to be hurled to ground, and now,Like a ripe field of wheat where once drove plough,All bounteous as she is fair, we think of thoseWho blew the breath of life into her frame:Cavour, Mazzini, Garibaldi: Three:Her Brain, her Soul, her Sword; and set her freeFrom ruinous discords, with one lustrous aim.
— George Meredith

There's another reason why you should love your enemies, and that is because hate distorts the personality of the hater. We usually think of what hate does for the individual hated or the individuals hated or the groups hated. But it is even more tragic, it is even more ruinous and injurious to the individual who hates. ... For the person who hates, the true becomes false and the false becomes true. That's what hate does.
— Martin Luther King, Jr.

Murder in the murderer is no such ruinous thought as poets and romancers will have it; it does not unsettle him, or fright him from his ordinary notice of trifles; it is an act quite easy to be contemplated.
— ruinous quotation by Ralph Waldo Emerson