Were it not Folly, Spider-like to spin The Thread of present Life away to win- What? for ourselves, who know not if we shall Breathe out the very Bre… - Omar Khayyám

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Old Khayyám, say you, is a debauchee;
If only you were half so good as he!
He sins no sins but gentle drunkenness,
Great-hearted mirth, and kind adultery.

But yours the cold heart, and the murderous tongue,
The wintry soul that hates to hear a song,
The close-shut fist, the mean and measuring eye,
And all the little poisoned ways of wrong.

Whoever thinks algebra is a trick in obtaining unknowns has thought it in vain. No attention should be paid to the fact that algebra and geometry are different in appearance. Algebras (jabbre and maqabeleh) are geometric facts which are proved by propositions five and six of Book two of Elements.