It is always possible to bind together a considerable number of people in love, so long as there are other people left over to receive the manifestations of their aggressiveness.

Loneliness and darkness have just robbed me of my valuables.

From error to error one discovers the entire truth.

Only the real, rare, true scientific minds can endure doubt, which is attached to all our knowledge.

I no longer count as one of my merits that I always tell the truth as much as possible; it has become my metier.

These patients have turned away from outer reality; it is for this reason that they are more aware than we of inner reality and can reveal to us things which without them would remain impenetrable.

If the truth of religious doctrines is dependent on an inner experience that bears witness to the truth, what is one to make of the many people who do not have that experience?