The only struggle which religions can justify, the only struggle worthy of humans, is the moral struggle against humanity's own disordered passions, against every kind of selfishness, against attempts to oppress others, against every type of hatred and violence.
In suffocating the voice of conscience, passion carries with itself a restlessness of the body and the senses: it is the restlessness of the "external man." When the internal man has been reduced to silence, then passion, once it has been given freedom of action, so to speak, exhibits itself as an insistent tendency to satisfy the senses and the body.