Neither prosperity nor empire nor heaven can be worth winning at the price of a virulent temper, bloody hands, an anguished spirit, and a vain hatred of the rest of the world.
Nothing prevents us from being and remaining the exponents of a united humanity, when we have a country of our own. To fulfill this mission we do not have to remain literally planted among the nations who hate and despise us.
You may have enemies whom you hate, but not enemies whom you despise. You must be proud of your enemy: then the success of your enemy shall be your success too.
You know how cunningly mankind is planned:
We have one loving and one hating hand.
The loving's made to hold each other like,
While with the hating other hand we strike.
It is easy to hate and it is difficult to love. This is how the whole scheme of things works. All good things are difficult to achieve; and bad things are very easy to get.
This is what you should do: love the earth and sun and the animals, despise riches, give alms to everyone that asks, stand up for the stupid and crazy, devote your income and labor to others, hate tyrants, argue not concerning God, have patience and indulgence toward the people, take off your hat to nothing known or unknown or to any man or number of men ... re-examine all you have been told at school or church or in any book, dismiss what insults your own soul, and your very flesh shall be a great poem.
I agree with your remark about loving your enemy as far as actions are concerned. But for me the cognitive basis is the trust in an unrestricted causality. 'I cannot hate him, because he must do what he does.' That means for me more Spinoza than the prophets.