C. G. Jung (1875-1961)

Show me a sane man and I will cure him for you.
So they speak soothingly about progress and the greatest possible happiness, forgetting that happiness is itself poisoned if the measure of suffering has not been fulfilled.
The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.
The creation of something new is not accomplished by the intellect but by the play instinct acting from inner necessity. The creative mind plays with the objects it loves.
Every Roman was surrounded by slaves. The slave and his psychology flooded ancient Italy, and every Roman became inwardly, and of course unwittingly, a slave. Because living constantly in the atmosphere of slaves, he became infected through the unconscious with their psychology. No one can shield himself from such an influence.

        — Contributions to Analytical Psychology, 1928
There is no birth of consciousness without pain.
Fanaticism is nothing but over-compensated doubt.
It is a notorious fact that the morality of society as a whole is in inverse ratio to its size; for the greater the aggregation of individuals, the more the individual factors are blotted out, and with them morality, which rests entirely on the moral sense of the individual and the freedom necessary for this. Hence every man is, in a certain sense, unconsciously a worse man when he is in society than when acting alone; for he is carried by society and to that extent relieved of his individual responsibility. Any large company composed of wholly admirable persons has the morality and intelligence of an unwieldy, stupid, and violent animal.

        — Relations Between the Ego and the Unconscious
Thinking is difficult, that's why most people judge.