No animal admires another animal.

That we must love one God only is a thing so evident that it does not require miracles to prove it.

How vain painting is-we admire the realistic depiction of objects which in their original state we don't admire at all.

The heart has arguments with which the logic of mind is not aquainted.

We feel neither extreme heat nor extreme cold; qualities that are in excess are so much at variance with our feelings that they are impalpable: we do not feel them, though we suffer from their effects.

Those who are accustomed to judge by feeling do not understand the process of reasoning, because they want to comprehend at a glance and are not used to seeking for first principles. Those, on the other hand, who are accustomed to reason from first principles do not understand matters of feeling at all, because they look for first principles and are unable to comprehend at a glance.

The more I see of Mankind, the more I prefer my dog.