Let reason alone decide.
Being alone is and nothing is altogether not.
Give me a chance to create a fever and I will cure any disease.
You must learn all things, both the unshaken heart of persuasive truth, and the opinions of mortals in which there is no true warranty.
Never will this prevail, that the things that are not are — bar your thought from this road of inquiry.
We can speak and think only of what exists. And what exists is uncreated and imperishable for it is whole and unchanging and complete. It was not or nor shall be different since it is now, all at once, one and continuous.