Music's force can tame the furious beast;
Can make the wolf or foaming boar restrain
His rage; the lion drop his crested mane
Attentive to the song. [ Prior ]

Knowledge and wisdom, far from being one,
Have ofttimes no connection. Knowledge dwells
In heads replete with thoughts of other men;
Wisdom, in minds attentive to their own. [ William Cowper ]

The beautiful invariably possesses a visible and a hidden beauty; and it is certain that no style is so beautful as that which presents to the attentive reader a half-hidden meaning. [ Joubert ]

The tongue tells the thought of one man only, whereas the face expresses a thought of nature itself; so that every one is worth attentive observation, even though every one may not be worth talking to. [ Arthur Schopenhauer ]

Man little knows what calamities are beyond his patience to bear till he tries them; as in ascending the heights of ambition, which look bright from below, every step we rise shows us some new and gloomy prospect of hidden disappointment; so in our descent from the summits of pleasure, though the vale of misery below may appear, at first, dark and gloomy, yet the busy mind, still attentive to its own amusement, finds, as we descend, something to flatter and to please. Still as we approach, the darkest objects appear to brighten, and the mortal eye becomes adapted to its gloomy situation. [ Goldsmith ]