Natural inward impulse; unconscious, involuntary, or unreasoning prompting to any mode of action, whether bodily, or mental, without a distinct apprehension of the end or object to be accomplished.
“An instinct is a propensity prior to experience, and independent of instructions.”
— Paley.
“An instinct is a blind tendency to some mode of action, independent of any consideration, on the part of the agent, of the end to which the action leads.”
— Whately.
“An
instinct is an agent which performs blindly and ignorantly a work of intelligence and knowledge.”
— Sir W. Hamilton.
“By a divine
instinct, men's minds mistrust
Ensuing dangers.”
— Shak.