Rasmus

“As it was, his aversion to religion, in the sense usually attached to the term, was of the same kind with that of Lucretius: he regarded it with the feelings due not to a mere mental delusion, but to a great moral evil. He looked upon it as the greatest enemy of morality: first, by setting up fictitious excellences—belief in creeds, devotional feelings, and ceremonies, not connected with the good of human-kind—and causing these to be accepted as substitutes for genuine virtues; but above all, by radically vitiating the standard of morals; making it consist in doing the will of a being, on whom it lavished indeed all the phrases of adulation, but whom in sober truth it depicted as eminently hateful”
― John Stuart Mill

“I thought to myself: I am wiser than this man; neither of us probably knows anything that is really good, but he thinks he has knowledge, when he has not, while I, having no knowledge, do not think I have.”
― Plato, Apology

“Why should I fear death?
If I am, then death is not.
If Death is, then I am not.
Why should I fear that which can only exist when I do not?
Long time men lay oppressed with slavish fear.
Religious tyranny did domineer.
At length the mighty one of Greece
Began to assent the liberty of man.”
― Epicurus

“My own mind is my own church.”
― Thomas Paine, The Age of Reason