Sincerity causes the smallest of good deeds to become the largest.

My sincerity is my credentials.

Ceremony and great professing renders friendship as much suspect as it does religion.

Everyone says he's sincere, but everyone isn't sincere. If everyone was sincere who says he's sincere there wouldn't be half so many insincere ones in the world and there would be lots, lots, lots more really sincere ones!

To be sincere means to be the same person when one is with oneself; that is to say, alone - but that is all it means.

Fear is not in the habit of speaking truth.

Better is the wrong with sincerity, rather than the right with falsehood.

Teach French and unteach sincerity.

The truest politeness comes of sincerity.

Those most moved to tears by every word of a preacher are generally weak and a rascal when the feelings evaporate.