The first and highest law must be the love of man to man. Homo homini Deus est - this is the supreme practical maxim, this is the turning point of the world's History.

To theology, ... only what it holds sacred is true, whereas to philosophy, only what holds true is sacred.

In the consciousness of the infinite, the conscious subject has for his object the infinity of his own nature.

[T]ruth is considered profane, and only illusion is sacred

This work, though it deals only with eating and drinking, which are regarded in the eyes of our supernaturalistic mock-culture as the lowest acts, is of the greatest philosophic significance and importance... How former philosophers have broken their heads over the question of the bond between body and soul! Now we know, on scientific grounds, what the masses know from long experience, that eating and drinking hold together body and soul, that the searched-for bond is nutrition.

The doctrine of foods is of great ethical and political significance. Food becomes blood, blood becomes heart and brain, thoughts and mind stuff. Human fare is the foundation of human culture and thought. Would you improve a nation? Give it, instead of declamations against sin, better food. Man is what he eats [Der Mensch ist, was er isst].