The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth
Immanuel KantIt is not necessary that whilst I live I live happily; but it is necessary that so long as I live I should live honourably.
Immanuel KantIf education is to develop human nature so that it may attain the object of its being, it must involve the exercise of judgment.
Immanuel Kant