There were low rambling buildings of concrete
barred with heavy impassable doors, and no amount of hammering and hallooing brought any response.
The overgrown yard of his cot- tage could be laid over with concrete
The image of the "presence" whatever it was, waiting there for him to go - this image had not yet been so concrete
for his nerves as when he stopped short of the point at which certainty would have come to him.
The women who might pass his way could deny their lust for concrete
possessions, but their actions, however concealed their motives, would give the lie to any ineffectual glamour of romance they might attempt to fling over their carefully measured adventures of the heart.
He scratched the concrete
thoughtfully with his stick.
Nestled in a deep valley lay a city of Martian concrete
, whose every street and plaza and open space was roofed with glass.
Aristotle in his Constitutions had made a study of one hundred and fifty-eight constitutions of the states of his day, and the fruits of that study are seen in the continual reference to concrete
political experience, which makes the Politics in some respects a critical history of the workings of the institutions of the Greek city state.
A man does not tie his shoe without recognizing laws which bind the farthest regions of nature: moon, plant, gas, crystal, are concrete
geometry and numbers.
On each one of its concentric walls, the priests could read the word translated and manifested to the eye, and thus they followed its transformations from sanctuary to sanctuary, until they seized it in its last tabernacle, under its most concrete
form, which still belonged to architecture: the arch.
His mind was concrete
and moved with difficulty in regions of the abstract; but, even when he could not follow the reasoning, it gave him a curious pleasure to follow the tortuosities of thoughts that threaded their nimble way on the edge of the incomprehensible.
He was  meant--we see it in the variety, the high level both of matter and style, the animation, the gravity, of one after another of these thoughts--on religion, on poetry, on politics in the highest sense; on their most abstract principles, and on the authors who have given them a personal colour; on the genius of those authors, as well as on their concrete
works; on outlying isolated subjects, such as music, and special musical composers--he was meant, if people ever are meant for special lines of activity, for the best sort of criticism, the imaginative criticism; that criticism which is itself a kind of construction, or creation, as it penetrates, through the given literary or artistic product, into the mental and inner constitution of the producer, shaping his work.
As I turned, romance, adventure, and discovery in the abstract took wing before the terrible embodiment of all three in concrete
form that I beheld advancing upon me.