There must be a positive and negative in everything in the universe in order to complete a circuit or circle, without which there would be no activity, no motion.
— John McDonald

Beginning with exercise, the best training program available for real results is circuit training.
Lee Haney circuitous quote

All is forgotten in the stone halls of the dead. These are the rooms of ruin where the spiders spin and the great circuits fall quiet, one by one...
— Stephen King

The moment of truth, the sudden emergence of a new insight, is an act of intuition. Such intuitions give the appearance of miraculous flushes, or short-circuits of reasoning. In fact they may be likened to an immersed chain, of which only the beginning and the end are visible above the surface of consciousness. The diver vanishes at one end of the chain and comes up at the other end, guided by invisible links.
— Arthur Koestler

...for until that God who rules all the region of the sky...has freed you from the fetters of your body, you cannot gain admission here. Men were created with the understanding that they were to look after that sphere called Earth, which you see in the middle of the temple. Minds have been given to them out of the eternal fires you call fixed stars and planets, those spherical solids which, quickened with divine minds, journey through their circuits and orbits with amazing speed...
— circuitous quotation by Marcus Tullius Cicero