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The dog, on the other hand, has few or no ideas because his brain acts in coarse fashion and because there are few connections with each single process.

Man is the only animal capable of reasoning, though many others possess the faculty of memory and instruction in common with him.

To say that man is a reasoning animal is a very different thing than to say that most of man's decisions are based on his rational process. That I don't believe at all.

You have to train a dog to think.

I approach my character with the question: What would an animal think? How would an animal respond? A lot of times, it's quick action and no fear, and sometimes it's irrational fear. You don't always know.

You don't know what mental telepathy exists from the human to the animal.

There is no evidence that an animal can take on the sophisticated task of deciding to end his life and to communicate that decision to us.

Reasoning draws a conclusion, but does not make the conclusion certain, unless the mind discovers it by the path of experience.

When, instead of merely associating some act with some situation in the animal way, we think the situation out, we have a set of particular feelings of its elements.

There is little evidence that other animals judge the appropriateness of actions that do not directly affect themselves.