He who lives as children live - who does not struggle for his bread and does not believe that his actions possess any ultimate significance - remains childlike.

Evolution does not make happiness its goal; it aims simply at evolution and nothing else.

That a person cannot and consequently will not defend himself, does not yet cast disgrace upon him in our eyes ; but we despise the person who has neither the ability nor the good will for revenge whether it be a man or a woman.

We are, indeed, not among the least contented. You, however, if your belief makes you blessed then appear to be blessed! Your faces have always been more injurious to your belief than our objections have! If these glad tidings of your Bible were written on your faces, you would not need to insist so obstinately on the authority of that book ... As things are, however, all your apologies for Christianity have their roots in your lack of Christianity; with your defense plea you inscribe your own bill of indictment.

The world is a work of art that gives birth to itself.

What doesn't kill you make you stronger.

That little hypocrites and half-crazed people dare to imagine that on their account the laws of nature are constantly broken; such an enhancement of every kind of selfishness to infinity, to impudence, cannot be branded with sufficient contempt. And yet Christianity owes its triumph to this pitiable flattery of personal vanity.