Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.
The behavior of men to the lower animals, and their behavior to each other, bear a constant relationship.
Science is organized knowledge.
In science the important thing is to modify and change one's ideas as science advances.
Society exists for the benefit of its members, not the members for the benefit of society.
People are beginning to see that the first requisite to success in life is to be a good animal.