There's nothing more contagious than the laughter of young children, it doesn't even have to matter what they're laughing about.
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.
Greed is a contagious mental illness without which civilization as we know it would not have been possible.
The only activity a cynic will find contagious is yawning, that is, with other people, at other people.
Fear has always been a very important whistleblower. Our emotion and our history can provoke fear that may arrest us at any time or at any place. Above and beyond, fear might be contagious and its scent, sometimes sensual, sometimes mystical or animal, can exude the musty and arcane smell of destiny. (One could still feel the smell of fear )
Who can tell? It may be that there must always be growth - and that if one does not grow kinder and wiser and greater, then the growth must be the other way, fostering the evil things. Or it may be that the life they all led was too shut in, too folded back upon itself - without breadth or vision. Or it may be that, like a disease of crops, it is contagious, that first one and then another is sickened.
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.
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 man or woman they really are.
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.
There is no teacher equal to mother and there's nothing more contagious than the dignity of a father.
And Peter laughed, and when he did, all the Devils grinned, because Peter's laugh was a most contagious thing.