‘Anger is cruel and fury overwhelming, but who can stand before jealousy?’ Proverbs 27:4
‘A person is born with feelings of envy and hate. If he gives way to them, they will lead him to violence and crime, and any sense of loyalty and good faith will be abandoned.’ Xun Zi
‘It is not enough to succeed, others must fail." Francois Duc De La Rochefoucauld
"Man will do many things to get himself loved; he will do all things to get himself envied." Mark Twain
‘O, beware, my lord, of jealousy;
It is the green-eyed monster which doth mock
The meat it feeds on;’ William Shakespeare