It was in a book I was reading.

Today is the tomorrow that you worried about yesterday and all is well.

One that I have not heard before, but I really believe can be applied to the ‘why’ question of people’s actions when they portray themselves to be "good, upstanding, Christian folk."

A church is not a country club (or museum) for saints, but rather a hospital for sinners

I heard it a few days ago, and it is still there rattling around in my head, so it must be a keeper.

As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.
– Albert Einstein