With duller steel than the Perséan sword They cut away no formless monster's head, But one, whose gentleness did well accord With death, as life. The… - John Keats

At once it struck me what quality went to form a man of achievement, especially in literature, and which Shakespeare possessed so enormously — I mean negative capability, that is, when a man is capable of being in uncertainties, mysteries, doubts, without any irritable reaching after fact and reason.

Ever let the Fancy roam,
Pleasure never is at home.

When I have fears that I may cease to be
Before my pen has glean’d my teeming brain,
Before high piled books, in charact’ry,
Hold like rich garners the full-ripen’d grain;
When I behold, upon the night’s starr’d face,
Huge cloudy symbols of a high romance,
And think that I may never live to trace
Their shadows, with the magic hand of chance;
And when I feel, fair creature of an hour!
That I shall never look upon thee more,
Never have relish in the faery power
Of unreflecting love! — then on the shore
Of the wide world I stand alone, and think
Till Love and Fame to nothingness do sink.

When I Have Fears That I May Cease To Be