In things pertaining to enthusiasm, no man is sane who does not know how to be insane on proper occasions.

In things pertaining to enthusiasm, no man is sane who does not know how to be insane on proper occasions.

There is a real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

There is a real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

Success is not the result of spontaneous combustion, you must set yourself on fire first.

Success is not the result of spontaneous combustion, you must set yourself on fire first.

Nothing great was ever achieved without enthusiasm.

Nothing great was ever achieved without enthusiasm.

A mediocre idea that generates enthusiasm will go further than a great idea that inspires no one.

A mediocre idea that generates enthusiasm will go further than a great idea that inspires no one.

Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised.

Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised.

Enthusiasm is everything. It must be taut and vibrating like a guitar string.

Enthusiasm is everything. It must be taut and vibrating like a guitar string.

Enthusiasm is contagious. Be a carrier.

Enthusiasm is contagious. Be a carrier.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of enthusiasm.