approach of danger

See: peril
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References in classic literature ?
At the approach of danger there are always two voices that speak with equal power in the human soul: one very reasonably tells a man to consider the nature of the danger and the means of escaping it; the other, still more reasonably, says that it is too depressing and painful to think of the danger, since it is not in man's power to foresee everything and avert the general course of events, and it is therefore better to disregard what is painful till it comes, and to think about what is pleasant.
The public would be fairly warned of the approach of danger, and elaborate measures were being taken for the protection of the people in the threatened southwestern suburbs.
At what point then is the approach of danger to be expected?
It was Shakespeare's Lady Macbeth who said, referring to her awareness of the approach of danger, "Let no dog bark.