As a man without forethought scarcely deserves the name of a man, so forethought without reflection is but a metaphorical phrase for the instinct of … - Samuel Taylor Coleridge

There is one art, of which every man should be master, the art of . If you are not a thinking man, to what purpose are you a man at all? In like manner, there is one knowledge, which it is in every man's interest and duty to acquire, namely, : or to what end was man alone, of all animals, endowed by the Creator with the faculty of self-consciousness?

They passed the hall, that echoes still,
Pass as lightly as you will.
The brands were flat, the brands were dying,
Amid their own white ashes lying;
But when the lady passed, there came
A tongue of light, a fit of flame;
And Christabel saw the lady's eye,
And nothing else saw she thereby,

And the Devil did grin, for his darling sin Is pride that apes humility.