The love for all living creatures is the most noble attribute of man.

Animals, whom we have made our slaves, we do not like to consider our equal.

I cannot pretend to throw the least light on such abstruse problems. The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an Agnostic.

How paramount the future is to the present when one is surrounded by children.

Such actions as the above appear to be the simple result of the greater strength of the social or maternal instincts than that of any other instinct or motive.

Sympathy is our strongest instinct.

For firstly, the social instincts lead an animal to take pleasure in the society of his fellows, to feel a certain amount of sympathy with them, and to perform various services for them.

Communities, which included the greatest number of the most sympathetic members, would flourish best, and rear the greatest number of offspring.

It's not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.