If it had not been for the pernicious power of envy, men would not so have exalted vengeance above innocence and profit above justice... in these acts of revenge on others, men take it upon themselves to begin the process of repealing those general laws of humanity which are there to give a hope of salvation to all who are in distress.
ThucydidesThey are surely to be esteemed the bravest spirits who, having the clearest sense of both the pains and pleasures of life, do not on that account shrink from danger.
ThucydidesThe cause of all these evils was the lust for power arising from greed and ambition; and from these passions proceeded the violence of parties once engaged in contention.
Thucydides