He who distinguishes well, teaches well.

Explanation

Clear reasoning in law depends upon making precise distinctions; the failure to distinguish things that differ leads to confusion and error.

Where this applies

• Good legal reasoning depends on making careful and precise distinctions.
• Failing to distinguish things that are actually different leads to confusion and error.
• Clear thinking requires knowing where the differences lie.

See also

• 10.4.1 Every definition in law is perilous, for there is little that cannot be subverted.
• 10.9.1 Of things similar, the judgment is the same.