Cut off my head, and singular I am, Cut off my tail, and plural I appear; Although my middle's left, there's nothing there! What is my head cut off? A sounding sea; What is my tail cut off? A rushing river; And in their mingling depths I fearless play, Parent of sweetest sounds, yet mute forever.

The object of oratory alone in not truth, but persuasion.

The doctrine which, from the very first origin of religious dissensions, has been held by bigots of all sects, when condensed into a few words and stripped of rhetorical disguise, is simply this: I am in the right, and you are in the wrong. When you are the stronger, you ought to tolerate me; for it is your duty to tolerate truth. But when I am the stronger I shall persecute you; for it is my duty to persecute error.

The highest intellects, like the tops of mountains, are the first to catch and to reflect the dawn.

Beards in olden times, were the emblems of wisdom and piety.

People who take no pride in the noble achievements of remote ancestors will never achieve anything worthy to be remembered with pride by remote descendants.

When the great Kepler bad at length discovered the harmonic laws that regulate the motions of the heavenly bodies, he exclaimed: "Whether my discoveries will be read by posterity or by my contemporaries is a matter that concerns them more than me. I may well be contented to wait one century for a reader, when God Himself, during so many thousand years, has waited for an observer like myself.