Government is like a baby. An alimentary canal with a big appetite at one end and no sense of responsibility at the other.
— Ronald Reagan

I took the canal Zone and let Congress debate; and while the debate goes on, the canal does also.
Theodore Roosevelt canal quote

Sooner or later the Internet will become profitable. It's an old story played before by canals, railroads and automobiles.
— Paul Samuelson

The digestive canal represents a tube passing through the entire organism and communicating with the external world, i.e. as it were the external surface of the body, but turned inwards and thus hidden in the organism.
— Ivan Pavlov

Genial manners are good, and power of accommodation to any circumstance, but the high prize of life, the crowning fortune of a man is to be born with a bias to some pursuit, which finds him in employment and happiness, -- whether it be to make baskets, or broadswords, or canals, or statutes, or songs. I doubt not this was the meaning of Socrates, when he pronounced artists the only truly wise, as being actually, not apparently so.
— canal quotation by Ralph Waldo Emerson