It is continued temperance which sustains the body for the longest period of time, and which most surely preserves it free from sickness.
Wilhelm von HumboldtPossession, it is true, crowns exertion with rest; but it is only in the illusions of fancy that it has power to charm us.
Wilhelm von HumboldtThe sensual and spiritual are linked together by a mysterious bond, sensed by our emotions, though hidden from our eyes. To this double nature of the visible and invisible world - to the profound longing for the latter, coupled with the feeling of the sweet necessity for the former, we owe all sound and logical systems of philosophy, truly based on the immutable principles of our nature, just as from the same source arise the most senseless enthusiasms.
Wilhelm von Humboldt