Thoughts without content are empty, intuitions without concepts are blind.Immanuel Kant, Critique of Pure Reason
It is the representation of an intuition which gives us the matter for a concept.Immanuel Kant, Critique of Pure Reason
Through all time, and in all its appearances, the mind itself remains the same, unchanging and constant.Immanuel Kant, Critique of Pure Reason
To be is to be perceived.Immanuel Kant, Critique of Pure Reason
All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.Immanuel Kant, Critique of Pure Reason
The light dove, in free flight cutting through the air the resistance of which it feels, could get the idea that it could do even better in airless space.Immanuel Kant, Critique of Pure Reason
I had to deny knowledge in order to make room for faith.Immanuel Kant, Critique of Pure Reason
Concepts without percepts are empty; percepts without concepts are blind.Immanuel Kant, Critique of Pure Reason
Space and time are the framework within which the mind is constrained to construct its experience of reality.Immanuel Kant, Critique of Pure Reason
Out of timber so crooked as that from which man is made nothing entirely straight can be built.Immanuel Kant, Critique of Pure Reason