Human reason is by nature architectonic. - Immanuel Kant

War itself requires no particular motivation, but appears to be ingrained in human nature and is even valued as something noble; indeed, the desire for glory inspires men to it, even independently of selfish motives.

Thoughts without content are empty, intuitions without concepts are blind. The understanding can intuit nothing, the senses can think nothing. Only through their unison can knowledge arise.

Enlightenment is the emancipation of man from a state of self-imposed tutelage... of incapacity to use his own intelligence without external guidance. Such a state of tutelage I call 'self-imposed' if it is due, not to lack of intelligence, but to lack of courage or determination to use one's own intelligence without the help of a leader. Sapere aude! Dare to use your own intelligence! This is the battle-cry of the Enlightenment.