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708 its related idea, 98 f., 119; and unphilosophical probability, 144; every kind of opinion or judgment which amounts not to knowledge is derived entirely from the force and vivacity of the perception, and these qualities constitute in the mind what we call the belief of the existence of any object, 153 (v. Cause, § 7); of our ideas or imagination the basis of all assent, and the foundation of the senses, memory, and understanding, 165; not a ground of the distinction of our impressions into 'mere perceptions,' and perceptions that have a continued and distinct existence, 194; every lively idea agreeable, 353; not the only difference between ideas; ideas really feel different, 636; synonymous with force, solidity, firmness, steadiness, 629.

Virtue (v. Moral).

Vision—sight does not inform us of distance or outness, but reason, 191; sight and touch give us our ideas of extension, 235; only impressions of sight and touch are figured and extended, 236 f.

Volitions—are original facts and realities, so neither true nor false, conformable nor contrary to reason, 458; an immediate effect of pain and pleasure, 574 (v. Will).

War-foreign, the source of Government, 540.

Will.

§ 1. A. An exertion of converts power into action, 12 (cf. 172); influenced by vivid ideas of pleasure and pain, 119; scholastic and popular doctrines of, 312; and motive, 312; inconstancy of will of man, 313; and direct passions, 399 f.; not strictly passion, though an immediate effect of pleasure and pain: 'by will I mean nothing but the internal impression we feel and are conscious of when we knowingly give rise to any new motion of our body or new perceptions of our mind:' this impression indefinable, 399 (cf. 518); volition a direct passion, 438; 'the will exerts itself when either the good or the absence of the evil may be attained by any action of the mind or body,' 439; volitions as original existences neither true nor false, reasonable nor unreasonable, 458; 'will or choice,' 467: possessed by animals, 468; will=character or something durable or constant in man, 411, 412 (cf. 348, 575).

B. Willing an obligation strictly impossible, 517; the will never creates new sentiments and therefore cannot create a new obligation, 518 (cf. 399); but we feign the willing an obligation in order to avoid contradictions, 523.

§ 2. A.. Liberty and necessity of, 400 f. (v. Necessity); false sensation or experience of liberty by the agent who feels the easy movement of his will on either side, and imagines that the will is subject to nothing, and makes a fallacious experiment to prove it, 408; 'I do not ascribe to will that unintelligible necessity which is supposed to lie in matter, but I ascribe to matter that intelligible