He was a clot looking for a place to happen, a splinter of bone hunting a soft organ to puncture, a lonely lunatic cell looking for a mate.
— Stephen King

After a few months' acquaintance with European coffee, one's mind weakens, and his faith with it, and he begins to wonder if the rich beverage of home, with its clotted layer of yellow cream on top of it, is not a mere dream after all, and a thing which never existed.
Mark Twain clots quote

At the heart of the debate over intelligent design is this question: Can a scientific explanation of the history of life include the actions of an unseen higher being? The proponents of intelligent design, a school of thought that some have argued should be taught alongside evolution in the nation's schools, say that the complexity and diversity of life go beyond what evolution can explain.Biological marvels like the optical precision of an eye, the little spinning motors that propel bacteria and the cascade of proteins that cause blood to clot, they say, point to the hand of a higher being at work in the world.
— Kenneth Chang

It is more than likely that the brain itself is, in origin and development, only a sort of great clot of genital fluid held in suspense or reserved. This hypothesis would explain the enormous content of the brain as a maker or presenter of images.
— Ezra Pound

War is the great scavenger of thought. It is the sovereign disinfectant, and its red stream of blood is the Condy's Fluid that cleans out the stagnant pools and clotted channels of the intellect. We have awakened from an opium-dream of comfort, of ease, of that miserable poltroonery of the sheltered life. Our wish for indulgence of every sort, our laxity of manners, our wretched sensitiveness to personal inconvenience, these are suddenly lifted before us in their true guise as the specters of national decay; and we have risen from the lethargy of our dilettantism to lay them, before it is too late, by the flashing of the unsheathed sword.
— clots quotation by Sir Edmund Gosse