The only activity a cynic will find contagious is yawning, that is, with other people, at other people.

Yawns are not the only infectious things out there besides germs.Giggles can spread from person to person.So can blushing.But maybe the most powerful infectious thing is the act of speaking the truth.

It is not about whether you call yourself a leader or not. It is about what you have to show to people as a leader. Leadership is contagious, you carry it and share it.

Cruelty is contagious in uncivilized communities.

I’ll leave you two alone. Morality might be contagious.-Captain Tagon

Beware the unbelief of others. It’s contagious!

After all, suicide is contagious.

Fear is contagious. Fortunately, so is courage. Learning to become fearless will touch everyone around you, and best of all, you’ll find it’s a gift that keeps on giving.

Persistence contagious.

There is no teacher equal to mother and there’s nothing more contagious than the dignity of a father.

For any creative thought to be contagious, it must first be worthy of a sneeze.

And Peter laughed, and when he did, all the Devils grinned, because Peter’s laugh was a most contagious thing.

An idea is like a virus. Resilient. Highly contagious. The smallest seed of an idea can grow. It can grow to define…or destroy you.

There’s nothing more contagious than the laughter of young children; it doesn’t even have to matter what they’re laughing about.

To paraphrase Lucretius, there’s nothing more useful than to watch a man or woman in times of contagious deadly disease peril combined with his or her assumptions of financial adversity to discern what kind of...