Algebras (jabbre and maqabeleh) are geometric facts which are proved by propositions five and six of Book two of Elements.
My friend, let's not think of tomorrow, but let's enjoy this fleeting moment of life.
The unbeliever knows his Koran best.
The Flower that once has blown forever dies.
Dust into Dust, and under Dust to lie, Sans Wine, sans Song, sans Singer, and-sans End!
You've seen the world, and all you've seen is nothing; and everything, as well, that you have said and heard is nothing. You've sprinted everywhere between here and the horizon; it is nothing. And all the possessions you've treasured up at home are nothing.