You are dull, Casca, and those sparks of life
That should be in a Roman you do want,
Or else you use not. You look pale, and gaze,
And put on fear, and cast yourself in wonder
To see the strange impatience of the heavens.
But if you would consider the true cause
Why all these fires, why all these gliding ghosts,
Why birds and beasts from quality and kind,
Why old men fool and children calculate,
Why all these things change from their ordinance
Their natures and preformèd faculties
To monstrous quality—why, you shall find

Act 1 Scene 3 [Cassius]