Even a happy life cannot be without a measure of darkness, and the word happy would lose its meaning if it were not balanced by sadness. - Carl Jung

That which we do not bring to consciousness appears in our lives as fate

The great problems of life — sexuality, of course, among others — are always related to the primordial images of the collective unconscious. These images are really balancing or compensating factors which correspond with the problems life presents in actuality. This is not to be marvelled at, since these images are deposits representing the accumulated experience of thousands of years of struggle for adaptation and existence.

The growth of the mind is the widening of the range of consciousness, and ... each step forward has been a most painful and laborious achievement.