But whither am I strayed? I need not raise
Trophies to thee from other men's dispraise;
Nor is thy fame on lesser ruins built;
Nor needs thy juster title the foul guilt
Of Eastern kings, who, to secure their reign,
Must have their brothers, sons, and kindred slain.
Source, in full
On Mr. John Fletcher's Works. Compare: "Poets are sultans, if they had their will; For every author would his brother kill", Roger Boyle, 1st Earl of Orrery, Prologues (republished in Dramatic Works, 1739); "Should such a man, too fond to rule alone, Bear, like the Turk, no brother near the throne", Alexander Pope, Prologue to the Satires, line 197