What we call happiness in the strictest sense comes from the (preferably sudden) satisfaction of needs which have been dammed up to a high degree.

The facts which have caused us to believe in the dominance of the pleasure principle in mental life also find expression in the hypothesis that the mental apparatus endeavours to keep the quantity of excitation present in it as low as possible or at least to keep it constant.

Smoking is indispensable if one has nothing to kiss.

It is not attention that the child is seeking, but love.

Only the real, rare, true scientific minds can endure doubt, which is attached to all our knowledge.

The rest of our enquiry is made easy because this God-Creator is openly called Father. Psycho-analysis concludes that he really is the father, clothed in the grandeur in which he once appeared to the small child.

We know less about the sexual life of little girls than of boys. But we need not feel ashamed of this distinction; after all, the sexual life of adult women is a 'dark continent' for psychology.