E. Thou wilt test it in no other way than by thy experience. All thou knowest to be good or bad, thou knowest by thy experience. M. May I not know from others’ experience? E. Thou mayest believe, but thou canst not know. To know is to understand by the test of thy experience. The test of experience will not deceive thee. By it thou mayest try the philosophy which we teach. Thy mind will not doubt what it knows; but it will doubt what minds say; because thou hast already found many errors in the sayings of thy friends, but never one in the counsels of thy experience. Experience is true. However bitter it may be from the errors of thy life, yet it is true. Falsehoods even are true, as are facts; but there is this distinction, which experience has established. Falsehoods are wrongs, facts are not. Nevertheless, thou must see that wrongs are true to falsehoods, and falsehood to wrongs. The cause is true to its effect. If the cause be inharmonious with good, the wretchedness must ensue. If the cause be harmonious with mind, the effect can not be wrong. Therefore, falsehood, being a cause, and that cause not being in harmony with the progress and happiness of mind, must beget its true effect when received. That effect is wrong, and wrong because an evil is inflicted. All evil is true to the effect it produces. When a mind is in harmony with error, the error is true to that mind. The error is true to its effect. It is sure to produce its own likeness--to stamp its own image, when received by the mind. No effect, disagreeing with the cause, can ever exist in nature. Consequently, all things are causes of other things, and the cause and effect are true to each other. This is what we may call truth. M. Then truth is the relation of cause and effect?