The highest activity a human being can attain is learning for understanding, because to understand is to be free.

Those who wish to seek out the cause of miracles and to understand the things of nature as philosophers, and not to stare at them in astonishment like fools, are soon considered heretical and impious, and proclaimed as such by those whom the mob adores as the interpreters of nature and the gods.

What Paul says about Peter tells us more about Paul than about Peter.

If we conceive that anyone loves, desires, or hates anything which we ourselves love, desire, or hate, we shall thereupon regard the thing in question with more steadfast love, etc. On the contrary, if we think that anyone shrinks from something that we love, we shall undergo vacillation of the soul.

Ceremonies are no aid to blessedness.

He alone is free who lives with free consent under the entire guidance of reason.

Desire nothing for yourself, which you do not desire for others.