Dogs get lost hundreds of times and no one ever notices it or sends an account of it to a scientific magazine.

Amongst the minds of animals that of man leads, not as a demigod from another planet, but as a king from the same race.

He who learns and runs away, lives to learn another day.

Whatever exists at all exists in some amount. To know it thoroughly involves knowing its quantity as well as its quality.

Colors fade, temples crumble, empires fall, but wise words endure.

The intellectual evolution of the race consists in an increase in the number, delicacy, complexity, permanence and speed of formation of such associations.

So the animal finally performs in that situation only the fitting act.