William Shakespeare is universally popular because his plays are open to various interpretations and lack rigid dogma, allowing them to adapt to new contexts over time. Shakespeare may have been inspired by the universal concepts of the sun warming the Earth and the philosophical ideas of Giordano Bruno, who proposed a model of the solar system centered on the sun and was executed for heresy. References to the sun in Shakespeare's works, like Juliet being compared to the sun, could reflect early human nature religions and mankind's relationship with the sun providing life.