Shakespeare very rarely makes the least attempt to surprise by his catastrophes. They are felt to be inevitable, though the precise way in which they will be brought about is not, of course, foreseen.
Both Brutus and Hamlet are highly intellectual by nature and reflective by habit. Both may even be called, in a popular sense, philosophic; Brutus may be called so in a stricter sense.
Shakespeare also introduces the supernatural into some of his tragedies; he introduces ghosts, and witches who have supernatural knowledge.
We might not object to the statement that Lear deserved to suffer for his folly, selfishness and tyranny; but to assert that he deserved to suffer what he did suffer is to do violence not merely to language but to any healthy moral sense.
In approaching our subject it will be best, without attempting to shorten the path by referring to famous theories of the drama, to start directly from the facts, and to collect from them gradually an idea of Shakespearean Tragedy.