The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth

Quote by Immanuel Kant

Topics: Future Quotes, Living Quotes, Universe Quotes

Experience without theory is blind, but theory without experience is mere intellectual play.

Experience without theory is blind, but theory without experience is mere intellectual play.

Reason does not work instinctively, but requires trial, practice, and instruction in order to gradually...

Reason does not work instinctively, but requires trial, practice, and instruction in order to gradually...

Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: 'War is...

Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: 'War is...

A categorical imperative would be one which represented an action as objectively necessary in itself,...

A categorical imperative would be one which represented an action as objectively necessary in itself,...

If man makes himself a worm he must not complain when he is trodden on.

If man makes himself a worm he must not complain when he is trodden on.

All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions,...

All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions,...

So act that your principle of action might safely be made a law for the...

So act that your principle of action might safely be made a law for the...

Fallacious and misleading arguments are most easily detected if set out in correct syllogistic form

Fallacious and misleading arguments are most easily detected if set out in correct syllogistic form

Ingratitude is the essence of vileness.

Ingratitude is the essence of vileness.

From such crooked wood as that which man is made of, nothing straight can be...

From such crooked wood as that which man is made of, nothing straight can be...

Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without...

Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without...

Immaturity is the incapacity to use one's intelligence without the guidance of another.

Immaturity is the incapacity to use one's intelligence without the guidance of another.

Seek not the favor of the multitude; it is seldom got by honest and lawful...

Seek not the favor of the multitude; it is seldom got by honest and lawful...

Two things fill the mind with ever new and increasing wonder and awe - the...

Two things fill the mind with ever new and increasing wonder and awe - the...

Happiness is not an ideal of reason but of imagination

Happiness is not an ideal of reason but of imagination

I had therefore to remove knowledge, in order to make room for belief.

I had therefore to remove knowledge, in order to make room for belief.

No-one can compel me to be happy in accordance with his conception of the welfare...

No-one can compel me to be happy in accordance with his conception of the welfare...

To have a right to do a thing is not at all the same as...

To have a right to do a thing is not at all the same as...

In the long history of the world, only a few generations have been granted the...

In the long history of the world, only a few generations have been granted the...

He who is brave is free.

He who is brave is free.

Being happy with someone doesn't mean that everything about them is perfect, they can't be....

Being happy with someone doesn't mean that everything about them is perfect, they can't be....

Experience has shown, and a true philosophy will always show, that a vast, perhaps the...

Experience has shown, and a true philosophy will always show, that a vast, perhaps the...