Gratitude is the doorman's payment.

It is another's fault if he be ungrateful, but it is mine if I do not give. To find one thankful man, I will oblige a great many that are not so.

Next to ingratitude the most painful thing to bear is gratitude.

Maybe the only thing worse than having to give gratitude constantly is having to accept it.

In most of mankind gratitude is merely a secret hope of further favors.

We seldom find people ungrateful so long as it is thought we can serve them.

One ungrateful person, does an injury to all needy people.

Our favorite attitude should be gratitude