History of the Peloponnesian War

Shall we stand still till we be taken city after city when we know that that only way we are conquerable; and when we find them wholly bent to this, that by drawing some from our alliance with their words, and causing some to wear each other out with war upon hope of their confederacy, and winning others by other fit language, they may have the power to do us hurt? But we think, though one of the same island perish, yet if he dwell far off, the danger will not come to us; and before it arrive, we count unhappy only him that suffereth before us.

"If any therefore be of this opinion, that it is not he but the Syracusian that is the Athenian's enemy, and thinketh it a hard matter that he should endanger himself for the territory that is mine, I would have him to consider that he is to fight not chiefly for mine, but equally for his own in mine, and with the more safety for that I am not destroyed before and he thereby destitute of my help, but stand with him in the battle. Let him also consider that the Athenians come not hither to punish the Syracusians for being enemies to you, but by pretence of me to make himself the stronger by your friendship.

If any man here envieth or also feareth us (for the strongest are still liable unto both), and would therefore wish that the Syracusians might be weakened to make them more modest, but not vanquished for their own safety's sake, that man hath conceived a hope beyond the power of man. For it is not reasonable that the same man should be the disposer both of his desires and of his fortune.

And if his aim should fail him, he might, deploring his own misery, peradventure wish to enjoy my prosperity again. But this will not be possible to him that shall abandon me and not undertake the same dangers, though not in title, yet in effect the same that I do. For though it be our power in title, yet in effect it is your own safety you defend.