When people will not weed their own minds, they are apt to be overrun with nettles. – Horace Walpole, letter to the Countess of Ailesbury, 1779 July 10th
It is discouraging to try to penetrate a mind like yours. You ought to get it out and dance on it. That would take some of the rigidity out of it. – Mark Twain
One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen. – Robert A. Heinlein
