Great knowledge is requisite to instruct those who have been well instructed, but still greater knowledge is requisite to instruct those who have been neglected.

The devil tempts men through their ambition, their cupidity, or their appetite, until he comes to the profane swearer, whom he clutches without any reward.

Every addition to true knowledge is an addition to human power.

A house without books is like a room without windows.

The most precious wine is produced upon the sides of volcanoes. Now bold and inspiring ideals are only born of a clear head that stands over a glowing heart.

If an idiot were to tell you the same story every day for a year, you would end by believing it.

Let us labor for that larger comprehension of truth, and that more thorough repudiation of error, which shall make the history of mankind a series of ascending developments.