Indeed, the great Leonardo (da Vinci) remained like a child for the whole of his life in more than one way. It is said that all great men are bound to retain some infantile part. Even as an adult he continued to play, and this was another reason why he often appeared uncanny and incomprehensible to his contemporaries.
Sigmund FreudI think that in general it is a good plan occasionally to bear in mind the fact that people were in the habit of dreaming before there was such a thing as psychoanalysis.
Sigmund FreudAnxiety in children is originally nothing other than an expression of the fact they are feeling the loss of the person they love.
Sigmund FreudAnother technique for fending off suffering is the employment of the displacements of libido which our mental apparatus permits of and through which its function gains so much in flexibility. The task here is that of shifting the instinctual aims in such a way that they cannot come up against frustration from the external world.
Sigmund Freud