It is certainly a bad sign of common sense to appeal to it as a witness. - Immanuel Kant

Значи чисто логческитя критерий на истината, именно съгласуването на едно познание с общите и формални закони на разсъдъка и разума, е наистина conditio sine qua non. По-нататък обаче логиката не може да отиде и с никакъв пробен камък тя не може да открие грешката, която засяга не формата, а съдържанието.

In the kingdom of ends everything has either a price or a dignity. What has a price can be replaced by something else as its equivalent; what on the other hand is raised above all price and therefore admits of no equivalent has a dignity.

Space and time are the framework within which the mind is constrained to construct its experience of reality.