It is most important to allow the brain the full measure of sleep which is required to restore it; for sleep is to a man's whole nature what winding up is to a clock.

If I maintain my silence about my secret it is my prisoner...if I let it slip from my tongue, I am ITS prisoner.

What now on the other hand makes people sociable is their incapacity to endure solitude and thus themselves.

...this our world, which is so real, with all its suns and milky ways is-nothing.

Every parting gives a foretaste of death; every remeeting a foretaste of the resurrection. That is why even people who are indifferent to each other rejoice so much if they meet again after twenty or thirty years of separation.

Life without pain has no meaning.

A writer should never be brief at the expense of being clear.