“Reason may be a small force, but it is constant, and works always in one direction, while the forces of unreason destroy one another in futile strife. Therefore, every orgy of unreason in the end strengthens the friends of reason, and shows afresh that they are the only true friends of humanity.”

“The power of reason is thought small in these days, but I remain an unrepentant rationalist. Reason may be a small force, but it is constant, and works always in one direction, while the forces of unreason destroy one another in futile strife. Therefore every orgy of unreason in the end strengthens the friends of reason, and shows afresh that they are the only true friends of humanity.”

“The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.”

“To relinquish the futile effort to control change is one of the strengthening forces of true detachment & thus true love.”

“Someone sitting on a completely unreasonable belief is sitting on a time bomb. The apparently harmless, idiosyncratic belief of the Catholic Church that one thing may have the substance of another, although it displays absolutely none of its empirical qualities, prepares people for the view that some people are agents of Satan in disguise, which in turn makes it reasonable to destroy them.”

“My friend, in working upon a case, one does not take into account only the things that are "mentioned". There is no reason to mention many things which may be important. Equally, there is often an excellent reason for not mentioning them.”