Divide each difficulty into as many parts as possible for a better solution.

I think, therefore I am.

Good sense is the most evenly distributed thing in the world.

Once in one's life, everything should be called into doubt.

All things flow.

-- Heraclitus

Fables should be taught as fables, myths as myths, and miracles as poetic fancies.

-- Hypatia

For Being is, and non-Being is not.

-- Parmenides

For thinking and Being are the same.

-- Parmenides

Everything perfect proceeds outward from its own perfection.

-- Proclus

All things are in all things, but in each in the way that suits its own nature.

-- Porphyry