Algebras (jabbre and maqabeleh) are geometric facts which are proved by propositions five and six of Book two of Elements.

By Fate full many a heart has been undone, And many a sprightly rose made woe-begone; Plume thee not on thy lusty youth and strength: Full many a bud is blasted ere its bloom.

Thy Return is as another Sun to Heaven; a new Rose blooming in the Garden of the Soul.

We are in truth but pieces on this chess board of life, which in the end we leave, only to drop one by one into the grave of nothingness.

Up from Earth's Centre through the Seventh Gate rose, and on the Throne of Saturn sate; And many a Knot unravel'd by the Road; But not the Master-knot of Human Fate.

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.

Oh, the brave Music of a distant drum!