It is the function of parents to see that their children habitually experience the true consequences of their conduct.

Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.

To play billiards well is the sign of a misspent youth.

We do not commonly see in a tax a diminution of freedom, and yet it clearly is one.

Life is not for learning nor is life for working, but learning and working are for life.

Organs, faculties, powers, capacities, or whatever else we call them; grow by use and diminish from disuse, it is inferred that they will continue to do so. And if this inference is unquestionable, then is the one above deduced from it-that humanity must in the end become completely adapted to its conditions-unquestionable also. Progress, therefore, is not an accident, but a necessity.

Pervading all nature we may see at work a stern discipline , which is a little cruel that it may be very kind.