I tell you that as long as I can conceive something better than myself I cannot be easy unless I am striving to bring it into existence or clearing the way for it.

The medieval doctors of divinity who did not pretend to settle how many angels could dance on the point of a needle cut a very poor figure as far as romantic credulity is concerned beside the modern physicists who have settled to the billionth of a millimetre every movement and position in the dance of the electrons. Not for worlds would I question the precise accuracy of these calculations or the existence of electrons (whatever they may be). The fate of Joan is a warning to me against such heresy.

We are compelled by the theory of God's already achieved perfection to make Him a devil as well as a god, because of the existenceof evil. The god of love, if omnipotent and omniscient, must be the god of cancer and epilepsy as well.... Whoever admits that anything living is evil must either believe that God is malignantly capable of creating evil, or else believe that God has made many mistakes in His attempts to make a perfect being.

All great Truth first starts as Blasphemy.

I'm sick of all the reasonable people: they see all the reasons for doing nothing

The savage bows down to idols of wood and stone, the civilized man to idols of flesh and blood

The shot Irishmen will now take their places beside Emmet and the Manchester Martyrs in Ireland, and beside the heroes of Poland and Sérbia and Belgium in Europe; and nothing in heaven or earth can prevent it.