Familiar Quotations / A Collection of Passages, Phrases, and Proverbs Traced to / Their Sources in Ancient and Modern Literature

by Unknown

In the time of Pythagoras that proverbial phrase "Ipse dixit"[765:3] was introduced into ordinary life.

Pythagoras. xxv.

Xenophanes was the first person who asserted . . . that the soul is a spirit.

Xenophanes. iii.

It takes a wise man to discover a wise man.

Xenophanes. iii.

Protagoras asserted that there were two sides to every question, exactly opposite to each other.

Protagoras. iii.

[[766]]

Nothing can be produced out of nothing.[766:1]