To be is to be the value of a variable.

Our statements about the external world face the tribunal of sense experience not individually but only as a corporate body.

Philosophy of science is philosophy enough.

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

-- Porphyry

Everything perfect proceeds outward from its own perfection.

-- Proclus

All things flow.

-- Heraclitus

For Being is, and non-Being is not.

-- Parmenides

To study the Way is to study the self. To study the self is to forget the self. To forget the self is to be enlightened by the ten thousand things.

-- Dōgen

For whom emptiness works, everything works. For whom emptiness does not work, nothing works.

-- Nagarjuna