Conscience is the internal perception of the rejection of a particular wish operating within us.
Sigmund FreudThe psychoanalysis of neurotics has taught us to recognize the intimate connection between wetting the bed and the character trait of ambition.
Sigmund FreudNo, our science is no illusion. But an illusion it would be to suppose that what science cannot give us we can get elsewhere.
Sigmund FreudIt is unreasonable to expect science to produce a system of ethics-ethics are a kind of highway code for traffic among mankind-and the fact that in physics atoms which were yesterday assumed to be square are now assumed to be round is exploited with unjustified tendentiousness by all who are hungry for faith; so long as physics extends our dominion over nature, these changes ought to be a matter of complete indifference to you.
Sigmund Freud