Potassium

“Poor, unhappy Erik! Shall we pity him? Shall we curse him? He asked only to be 'some one,' like everybody else. But he was too ugly! And he had to hide his genius or use it to play tricks with, when, with an ordinary face, he would have been one of the most distinguished of mankind! He had a heart that could have held the entire empire of the world; and, in the end, he had to content himself with a cellar. Ah, yes, we must need pity the Opera ghost...”
― Gaston Leroux, The Phantom of the Opera

“Doubt requires more courage than conviction does, and more energy; because conviction is a resting place and doubt is infinite – it is a passionate exercise. You may come out of my play uncertain. You may want to be sure. Look down on that feeling. We’ve got to learn to live with a full measure of uncertainty. There is no last word. That’s the silence under the chatter of our time. ”
― John Patrick Shanley, Doubt, a Parable

“After all, it is sometimes rather enjoyable to feel insulted, is it not? For the person knows that no one has insulted him, and that he himself has thought up the insult and told lies as an ornament, has exaggerated in order to create a certain impression, has seized on a word and made a mountain out of a molehill – is well aware of this, and yet is the very first to feel insulted, feel insulted to the point of pleasure, to the point of great satisfaction, and for that very reason ends up nurturing a sense of true animosity…”
― Fyodor Dostoevsky, The Brothers Karamozov

“A human being in perfection ought always to preserve a calm and peaceful mind and never to allow passion or a transitory desire to disturb his tranquility. I do not think that the pursuit of knowledge is an exception to this rule. If the study to which you apply yourself has a tendency to weaken your affections and to destroy your taste for those simple pleasures in which no alloy can possibly mix, then that study is certainly unlawful, that is to say, not befitting the human mind. If this rule were always observed; if no man allowed any pursuit whatsoever to interfere with the tranquillity of his domestic affections, Greece had not been enslaved, Caesar would have spared his country, America would have been discovered more gradually, and the empires of Mexico and Peru had not been destroyed.”
― Mary Wollstonecraft Shelley, Frankenstein