Following the herd quote

It is harmful to follow the march of those who go before us, and since everyone had rather believe another than form his own opinion, we never pass a deliberate judgment upon life, but some traditional error always entangles us and brings us to ruin, and we perish because we follow other men`s examples: we should be cured of this if we were to disengage ourselves from the herd; but as it is, the mob is ready to fight against reason in defense of its own mistake.

On the happy life by Seneca