فعاشر الناس على ريبة .. منهم ولا تكثر منَ الأصدقاء - Omar Khayyám

إذا سقاك الدهر كأس العذاب
فلا تبن الناس وقع المصاب

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.

Dawn filled the sky with roses. In the
crystal-clear air the last song of the nightingale
dies. The smell of the wine weakens. This is the moment
when fools dream of fame! How soft
is your hair, my beloved!