Human existence is girt round with mystery: the narrow region of our experience is a small island in the midst of a boundless sea. To add to the mystery, the domain of our earthly existence is not only an island of infinite space, but also in infinite time. The past and the future are alike shrouded from us: we neither know the origin of anything which is, nor its final destination.

The beliefs which we have most warrant for, have no safeguard to rest on, but a standing invitation to the whole world to prove them unfounded.

With equality of experience and of general faculties, a woman usually sees much more than a man of what is immediately before her.

The struggle between Liberty and Authority is the most conspicuous feature in the portions of history with which we are earliest familiar; particularly in that of Greece, Rome, and England

A [psychological] difficulty is not an impossibility.

All silencing of discussion is an assumption of infallibility.

To refuse a hearing to an opinion, because they are sure that it is false, is to assume that their certainty is the same thing as absolute certainty. All silencing of discussion is an assumption of infallibility.