Boasting and bravado may exist in the breast even of the coward, if he is successful through a mere lucky hit; but a just contempt of an enemy can alone arise in those who feel that they are superior to their opponent by the prudence of their measures.
ThucydidesMankind are tolerant of the praises of others as long as each hearer thinks that he can do as well or nearly as well himself, but, when the speaker rises above him, jealousy is aroused and he begins to be incredulous.
ThucydidesYou can now, if you choose, employ your present success to advantage, so as to keep what you have got and gain honour and reputation besides, and you can avoid the mistake of those who meet with an extraordinary piece of good fortune, and are led on by hope to grasp continually at something further, through having already succeeded without expecting it.
Thucydides