Without contraries is no progression. Attraction and repulsion, reason and energy, love and hate, are necessary to human existence. – William Blake
It is not because angels are holier than men or devils that makes them angels, but because they do not expect holiness from one another, but from God alone. – William Blake
When I tell any truth, it is not for the sake of convincing those who do not know it, but for the sake of defending those that do. – William Blake
Those who restrain their desires, do so because theirs is weak enough to be restrained. – William Blake
The beginning, middle, and end of the birth, growth, and perfection of whatever we behold is from contraries, by contraries, and to contraries; and whatever contrariety is, there is action and reaction, there is motion, diversity, multitude, and order, there are degrees, succession and vicissitude. – Giordano Bruno