The highest activity a human being can attain is learning for understanding, because to understand is to be free.
I do not know how to teach philosophy without becoming a disturber of the peace.
I have made a ceaseless effort not to ridicule, not to bewail, not to scorn human actions, but to understand them.
He alone is free who lives with free consent under the entire guidance of reason
Things which are accidentally the causes either of hope or fear are called good or evil omens.
Der Endzweck des Staates ist [...] im Grund die Freiheit.
I call him free who is led solely by reason.
It is the part of a wise man, I say, to refresh and restore himself in moderation with pleasant food and drink, with scents, with the beauty of green plants, with decoration, music, sports, the theater, and other things of this kind, which anyone can use without injury to another.