No power and no treasure can outweigh the extension of our knowledge.
The sweetest things become the most bitter by excess.
Poor mind, from the senses you take your arguments, and then want to defeat them? Your victory is your defeat.
The wise man belongs to all countries, for the home of a great soul is the whole world.
Poverty in a democracy is as much to be preferred to what is called prosperity under despots, as freedom is to slavery.
Men find happiness neither by means of the body nor through possessions, but through uprightness and wisdom.