Thoughts without content are empty, intuitions without concepts are blind.
Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: ‘War is bad in that it begets more evil than it kills.’
The only objects of practical reason are therefore those of good and evil. For by the former is meant an object necessarily desired according to a principle of reason; by the latter one necessarily shunned, also according to a principle of reason.
Intuition and concepts constitute… the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.
All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?
By a lie, a man… annihilates his dignity as a man.
So act that your principle of action might safely be made a law for the whole world.
Ingratitude is the essence of vileness.
Act that your principle of action might safely be made a law for the whole world.