Quixotic

Remember that there are two kinds of beauty: one of the soul and the other of the body. That of the soul displays its radiance in intelligence, in chastity, in good conduct, in generosity, and in good breeding, and all these qualities may exist in an ugly man. And when we focus our attention upon that beauty, not upon the physical, love generally arises with great violence and intensity. I am well aware that I am not handsome, but I also know that I am not deformed, and it is enough for a man of worth not to be a monster for him to be dearly loved, provided he has those spiritual endowments I have spoken of.” 
― Miguel de Cervantes Saavedra, Don Quixote Part 1 Of 2

Grey souls

“Rien n'est tout noir, ni tout blanc, c'est le gris qui gangne. Les hommes et leurs âmes, c'est pareil... T'es une âme grise, joliment grise, comme nous tous..."

Philippe Claudel, Grey Souls

Stiglitz

 ... perceptions of race, caste, and gender identities can have significant effects on productivity. In a brilliant set of experiments in India, low- and high-caste children were asked to solve puzzles, with monetary rewards for success. When they were asked to do so anonymously, there was no caste difference in performance. But when the low caste and high caste were in a mixed group where the low-caste individuals were known to be low caste (they knew it, and they knew that others knew it), low-caste performance was much lower than that of the high caste. The experiment highlighted the importance of social perceptions: low-caste individuals somehow absorbed into their own reality the belief that lower-caste individuals were inferior—but only so in the presence of those who held that belief.

Source: Joseph Stiglitz on Salon.com