The world is a living being - one nature, one soul. Keep that in mind.

Hast thou reason? I have. Why then dost not thou use it? For if this does its own work, what else dost thou wish?

A little flesh, a little breath, and a Reason to rule all - that is myself.

In an expression of true gratitude, sadness is conspicuous only by its absence

For any particular thing, ask: What is it in itself? What is its nature?

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

A man should always have these two rules in readiness. First, to do only what the reason of your ruling and legislating faculties suggest for the service of man. Second, to change your opinion whenever anyone at hand sets you right and unsettles you in an opinion, but this change of opinion should come only because you are persuaded that something is just or to the public advantage, not because it appears pleasant or increases your reputation.