Sentence examples for I can know for from inspiring English sources

And then there is another belief, which goes back at least to Descartes, that says, the one thing that I can know for certain is the contents of my own mind.

Soon I can know for sure.

At one moment last night, she had to step away from serving, because she was laughing so hard at (I think — who can know for sure?) some lewd remark a fan had shouted as she prepared her toss.

Then again, I guess nobody can know for sure how they will react to a World Cup-winning goal scored deep in injury time.

For example, I can know what it is like to experience red-17, as I stare at a rose of that color.

But no one can know for sure.

But who can know for sure?

This much we can know for sure.

"But if there's one thing I know, if you can know anything for certain in life, is that Alan and I are going to grow old and die together.

How can I know for sure?

My question is: How can I know for certain why they want me to think that?