Peace is not the absence of war, but a virtue based on strength of character.

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.

Care of the poor is incumbent on society as a whole.

The virtue of a free man appears equally great in refusing to face difficulties as in overcoming them.

Better that right counsels be known to enemies than that the evil secrets of tyrants should be concealed from the citizens. They who can treat secretly of the affairs of a nation have it absolutely under their authority; and as they plot against the enemy in time of war, so do they against the citizens in time of peace.

Surely human affairs would be far happier if the power in men to be silent were the same as that to speak.

It is not possible that we should remember that we existed before our body, for our can bear no trace of such existence, neither can eternity be defined in terms of time or have any relation to time. But notwithstanding, we feel and know that we are eternal.