The saying that beauty is but skin deep is but a skin-deep saying

Man needed one moral constitution to fit him for his original state; he needs another to fit him for his present state; and he has been, is, and will long continue to be, in process of adaptation.

Evil perpetually tends to disappear.

The current opinion that science and poetry are opposed is a delusion.

The truth is, that those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.

All evil results from the non-adaptation of constitution to conditions. This is true of everything that lives. Does a shrub dwindle in poor soil, or become sickly when deprived of light, or die outright if removed to a cold climate? it is …

Progress, therefore, is not an accident, but a necessity.