The tree of Knowledge is a Tree of Knowledge of good and evil.

It is only when we forget all our learning that we begin to know.

In our most trivial walks, we are constantly, though unconsciously, steering like pilots by certain well-known beacons and headlands, and if we go beyond our usual course we still carry in our minds the bearing of some neighboring cape; and not till we are completely lost, or turned round,--for a man needs only to be turned round once with his eyes shut in this world to be lost,--do we appreciate the vastness and strangeness of nature.

I love you not as something private and personal, which is my own, but as something universal and worthy of love which I have found.

To the man who cherishes a secret in his breast, there is a still greater secret unexplored. Our most indifferent acts may be a matter for secrecy, but whatever we do with the utmost truthfulness and integrity, by virtue of its pureness, must be transparent as light.

Blessed are they who never read a newspaper, for they shall see Nature, and through her, God.

No face which we can give to a matter will stead us so well at last as the truth. This alone wears well.