There is nothing so costly as ignorance.

After a child has arrived at the legal age for attending school,-whether he be the child of noble or of peasant,-the only two absolute grounds of exemption from attendance are sickness and death.

In trying to teach children a great deal in a short time, they are treated not as though the race they were to run was for life, but simply a three-mile heat.

Had I the power, I would scatter libraries over the whole land as the sower sows his wheatfield.

Affectation hides three times as many virtues as charity does sins.

Scientific truth is marvelous, but moral truth is divine and whoever breathes its air and walks by its light has found the lost paradise.

Astronomy is one of the sublimest fields of human investigation. The mind that grasps its facts and principles receives something of the enlargement and grandeur belonging to the science itself. It is a quickener of devotion.