In the book Julius Caesar fate is the key component. Shakespeare used fate in all of his writings. From noticing this I believe that Shakespeare himself was a firm believer in fate himself. In the book Julius Caesar everyone seems to have no free will and the run their lives according to omens, soothsayers, and dreams. It is like they are taking the easy way out and letting an outside force,fate, control every aspect of their life.
One of the multiple examples of fate in Julius Caesar is when the soothsayer runs up to Caesar and says, " Beware the ides of March." Caesar thinks nothing of it and moves on. Then when the ides of March come, on March 15th, Caesar is murdered. He was warned but did not really think and just as the soothsayer predicted tragedy happened at the ides of March.
Before Caesar's death his wife also tried to warn him of his death. She claimed that she had a dream that suggested something terrible would happen but her dream was just waved off as if there was no meaning. Then as fate would have it a very terrible thing did happen to Caesar. Fate was after Caesar and he could not avoid it.
Later in the book in act four scene three Brutus is visited by the ghost of Caesar. The Ghost tells him, "...thou shall see me at Philippi." Brutus excepts this omen as an omen of defeat. Then later at Philippi Brutus is defeated and kills himself. He acted as if there were no other option but for him to die.
After reading this book I can confidently conclude that Shakespeare believed in fate and wanted other people to see fate in his writings. Fate is uncontrollable and as shown in Julius Caesar what is going to happen will happen no matter what.