Question 1

What is the best book to start with?

Accepted Answer

Summa Theologiae, first part, question 2, then the first part of the second part, question 90 Question 2 is the five ways, objections included. Question 90 is the definition of law. Both show the article form, which is how he thinks.

Question 2

What is the most famous quote?

Accepted Answer

This library does not measure fame, and it does not rank lines by how often they are shared. The first line it files for Thomas Aquinas that is not marked Questionable or Misattributed is “Law is an ordinance of reason for the common good, made by one who has care of the community, and promulgated.” (Summa Theologiae I–II, question 90, article 4, Paraphrase or translation).

Question 3

What is the most misquoted line?

Accepted Answer

None of the lines this library files for Thomas Aquinas is marked Misattributed or Questionable. That is a fact about these cards, not a certificate that every popular sentence is theirs.

Question 4

What is one key idea, in a sentence?

Accepted Answer

Five ways: God's existence is not self-evident to us, but can be argued from change, cause, contingency, degrees, and directedness.