Avoid witticisms at the expense of others.

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

The earth flourishes, or is overrun with noxious weeds and brambles, as we apply or withhold the cultivating hand. So fares it with the intellectual system of man.

Resolve to edge in a little reading every day, if it is but a single sentence. If you gain fifteen minutes a day, it will make itself felt at the end of the year.

Those who exert the first influence upon the mind have the greatest power.

A human being is not attaining his full heights until he is educated.

Man is improvable. Some people think he is only a machine, and that the only difference between a man and a mill is, that one is carried by blood and the other by water.