For a mind so perspicuous as that of d’Artagnan, this indulgence was a light by which he caught a glimpse of a better future.
Alexandre Dumas
The Three Musketeers
It is the sentiment that swells and fills out the diction, which rises with it, and forms itself about it, for in the same degree that a thought is warmer, an expression will be brighter, as that is more strong, this will become more perspicuous; like glass in the furnace, which grows to a greater magnitude, and refines to a greater clearness, only as the breath within is more powerful, and the heat more intense.
Homer
The Iliad
I am always willing to run some hazard of being tedious in order to be sure that I am perspicuous; and after taking the utmost pains that I can to be perspicuous, some obscurity may still appear to remain upon a subject181 in its own nature extremely abstracted.
Adam Smith
The Wealth of Nations