Сърцето има доводи, които разумът не познава - Blaise Pascal

Rules for Definitions. I. Not to undertake to define any of the things so well known of themselves that the clearer terms cannot be had to explain them. II. Not to leave any terms that are at all obscure or ambiguous without definition. III. Not to employ in the definition of terms any words but such as are perfectly known or already explained.

[152] Between us and heaven or hell there is only life half-way, the most fragile thing in the world.

If the greatest philosopher in the world find himself upon a plank wider than actually necessary, but hanging over a precipice, his imagination will prevail, though his reason convince him of his safety.