If we glance at the most important revolutions in history, we are at no loss to perceive that the greatest number of these originated in the periodic… - Wilhelm von Humboldt

True enjoyment comes from activity of the mind and exercise of the body; the two are ever united.

Every development of truths which relate to human nature, and more especially its active manifestations, is attended with a wish to see worked out in practice what theory has shown us to be just and good. To man, whose mind is seldom satisfied with the calmly beneficent influence of abstract ideas, this desire is perfectly natural, and it increases in liveliness with the spirit of benevolent sympathy in social happiness and well-being. But, however natural in itself, and however noble in its origin, this desire has not unfrequently led to hurtful consequences,—nay, often to greater evils than the colder indifference, or (as from the very opposite cause the same effect may follow) the glowing enthusiasm, which, comparatively heedless of reality, delights only in the pure beauty of ideas.

Language is deeply entwined in the intellectual development of humanity itself, it accompanies the latter upon every step of its localized progression or regression; moreover, the pertinent cultural level in each case is recognizable in it. ... Language is, as it were, the external manifestation of the minds of peoples. Their language is their soul, and their soul is their language. It is impossible to conceive them ever sufficiently identical... . The creation of language is an innate necessity of humanity. It is not a mere external vehicle, designed to sustain social intercourse, but an indispensable factor for the development of human intellectual powers, culminating in the formulation of philosophical doctrine.