E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Walk not in the Public Ways.
The fifth symbol of the Protreptics of Iamblichus, meaning follow not the multitude in their evil ways; or, wide is the path of sin and narrow the path of virtue, few being those who find it. The public way is the way of the public or multitude, but the way of virtue is personal and separate. The arcana of Pythagoras were not for the common people, but only for his chosen or elect disciples.
Broad is the way that leadeth to destruction, but narrow is the path of truth and holiness.