Instinct (n.) if habit does not strengthen it soon dies, and the heart is still-born.
Instinct (n.) confines every beast to one, while man, having perhaps none of his own, could appropriate them all.
Instinct (n.) in its first form cannot be so ill-regulated that satisfying it endangers us, else man would have perished over and over before learning to stay alive.
Instinct (n.) was good while it was his only guide; amid human institutions it cannot be trusted — it must not be destroyed but controlled, which is harder.
Instinct (n.) explained by modern philosophers as a secret habit of reflection would mean children reflect more than adults: had my puppy, at his first beating, already acquired moral ideas?