Man must rise above the Earth - to the top of the atmosphere and beyond - for only thus will he fully understand the world in which he lives.
The friend must be like money, that before you need it, the value is known.
Envy is the ulcer of the soul.
Let us follow the truth whither so ever it leads.
The perfect human being is all human beings put together, it is a collective, it is all of us together that make perfection.
Nothing is to be preferred before justice.