Let us consider the problem in the light of pure reason.

The general problem: How is knowledge from pure reason possible?

What do you think of pure reason and its fruit?

In so doing, we learn the limits of pure reason.

In short, we cannot assume that higher education is a site of pure reason.

Do you need a purer reason to fight them than what they are?

In the judgements of pure reason, opinion has no place.

One is pure reason, meaning the understanding, science and logic.

It recognised the claims of historical science and pure reason.

This tribunal is nothing less than the critical investigation of pure reason.

So difficult is it to guide ourselves by the human faculty of pure reason.

I had nothing to work with except pure reason.

It is only by pure reason, therefore, that duty can and must be prescribed.

You have arrived at this knowledge by pure reason?

Any advances in how we treat them come from pure reason and compassion.

Her power had become an instrument of pure reason.

Pure reason was attacked as a colorless thing, cut off from blood.

It is the system of all the principles of pure reason.

But, it will be said, is this all that pure reason can effect, in opening up prospects beyond the limits of experience?

Even Earth is no paradise of disembodied intelligence and pure reason.

That is to say, not the conditions of pure reason, but only their effects in the internal sense, precede the act.

If they are principles of pure reason, our labour is alike in vain.

Pure reason makes four kinds of contradictory assertions about these Ideas.

They share the same form as human beings but possess spirits of pure reason (3.3).