A book is a mirror: if an ape looks into it an apostle is hardly likely to look out. - Georg Christoph Lichtenberg

He was always smoothing and polishing himself, and in the end he became blunt before he was sharp.

Je mehr man in einer Sprache durch Vernunft unterscheiden lernt, desto schwerer wird einem das Sprechen derselben. Im Fertig-Sprechen ist viel Instinktmäßiges, durch Vernunft läßt es sich nicht erreichen.

Delight at having understood a very abstract and obscure system leads most people to believe in the truth of what it demonstrates.