In any modern city, a great deal of our energy has to be expended in not seeing, not hearing, not smelling. An inhabitant of New York who possessed the sensory acuteness of an African Bushman would very soon go mad.
A critic recently described me, with deadly acuteness, as having 'a kindly dislike of my fellow-creatures.' Perhaps dread would have been nearer the mark than dislike; for man is the only animal of which I am thoroughly and cravenly afraid.George Bernard Shaw
The antagonism between nationalities will lose all its acuteness on the day when neither the iniquitous tendency to oppression and domination, nor the perpetual danger of the threatening preparations for war will exist. ("L'antagonisme entre les nationalités perdra toute son acuité le jour où n'existera plus la tendance inique à l'oppression et à la domination, ni le perpétuel danger des menaçants préparatifs de guerre.:;», Fr. ")african spir
The credit of first using the telescope for astronomical purposes is almost invariably attributed to Galilei, though his first observations were in all probability slightly later in date than those of Harriot and Marius , is to a great extent justified by the persistent way in which he examined object after object, whenever there seemed any reasonable prospect of results following, by the energy and acuteness with which he followed up each clue, by the independence of mind with which he interpreted his observations, and above all by the insight with which he realised their astronomical importance.