This can never become popular, and, indeed, has no occasion to be so; for fine-spun arguments in favour of useful truths make just as little impression on the public mind as the equally subtle objections brought against these truths. On the other hand, since both inevitably force themselves on every man who rises to the height of speculation, it becomes the manifest duty of the schools to enter upon a thorough investigation of the rights of speculative reason, and thus to prevent the scandal which metaphysical controversies are sure, sooner or later, to cause even to the masses.

Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray.

We can judge the heart of a man by his treatment of animals.

But although all our knowledge begins with experience, it does not follow that it arises from experience.

It is presumed that there exists a great unity in nature, in respect of the adequacy of a single cause to account for many different kinds of consequences.

Beauty presents an indeterminate concept of Understanding, the sublime an indeterminate concept of Reason.

The human heart refuses To believe in a universe Without a purpose.