Like all mad men, I thought everyone was mad except myself.

It's like scarlet fever: one has to get it over." "Then one should invent a way of inoculating love, like vaccination.

Rummaging in our souls, we often dig up something that ought to have lain there unnoticed.

Then we should find some artificial inoculation against love, as with smallpox.

The epitaph that I would write for history would say: I conceal nothing. It is not enough not to lie. One should strive not to lie in a negative sense by remaining silent.

Happiness is in your ability to love others.

A new conception of life cannot be imposed on men; it can only be freely assimilated. And it can only be freely assimilated in two ways: one spiritual and internal, the other experimental and external.