- VS29: For I would certainly prefer, as I study Nature, to announce frankly what is beneficial to all people, even if none agrees with me, rather than to compromise with common opinions, and thus reap the frequent praise of the many.
- VS54: We must not pretend to study philosophy, but study it in reality, for it is not the appearance of health that we need, but real health.
- Diogenes Laertius : When once a man has attained wisdom, he no longer has any tendency contrary to it or willingly pretends that he has.