Only he is a truly ethical, a truly human being, who has the courage to see through his own religious feelings and needs.

It is not as in the Bible, that God created man in his own image. But, on the contrary, man created God in his own image.

It is as clear as the sun and as evident as the day that there is no God and that there can be none.

Religion is the dream of the human mind. But even in dreams we do not find ourselves in emptiness or in heaven, but on earth, in the realm of reality; we only see real things in the entrancing splendor of imagination and caprice, instead of in the simple daylight of reality and necessity.

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.

Christianity has in fact long vanished, not only from the reason but also from the life of mankind, and it is nothing more than a fixed idea.

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