Love is a state of temporary psychosis.

Men are more moral than they think and far more immoral than they can imagine.

Religion [is] the universal obsessional neurosis of humanity

Human life in common is only made possible when a majority comes together which is stronger than any separate individual and which remains united against all separate individuals. The power of this community is then set up as right in opposition to the power of the individual, which is condemned as brute force.

Just as no one can be forced into belief, so no one can be forced into unbelief.

The assumption that everything past is preserved holds good even in mental life only on condition that the organ of the mind has remained intact and that its tissues have not been damaged by trauma or inflammation. But destructive influences which can be compared to causes of illness like these are never lacking in the history of a city, even if it has had a less chequered past than Rome, and even if, like London, it has hardly ever suffered from the visitations of an enemy.

Whatever fosters the growth of civilization works at the same time against war.