Doubt cannot override a certainty.

You can't override life or death, and it can't override you, so ride with it..

— Melchor Lim

No matter how powerful you are, you can't override your Fate :)

— Ishu Anand

I am very comfortable with the idea that we can override biology with free will.

— Richard Dawkins

What happens when the guy who runs the reactor gets out of bed wrong or decides, for some reason, that he wants to override…

— David R. Brower

Listen to that little voice that says, 'Mmm, I don't think so.' Because when you override that, you basically override who you are.

— Glenn Close

I don't mind being good looking but that should not override all my other attributes.

— Lisa Haydon

Living by faith isn't living with certainty. It's trusting God in spite of unanswered questions and unresolved doubts.

— Rick Warren

“In this world, what is here is not necessarily here, and what is now may not really be now: place and time are malleable,…

— Amir Aczel

“Though what could anyone really say these days with one hundred percent certainty?”

— Garth Risk Hallberg

Go for broke. Always try and do too much. Dispense with safety nets. Take a deep breath before you begin talking. Aim for the…

— Salman Rushdie

Uncertainty is the only certainty there is, and knowing how to live with insecurity is the only security

— John Allen Paulos

Criticism, though dignified from the earliest ages by the labours of men eminent for knowledge and sagacity, has not yet attained the certainty and…

— Samuel Johnson

[I]f in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundations of knowledge…

— Roger Bacon

As a businessman, I know that businesses need certainty.

— Bill Foster

Of course I doubt. I do not practice a certainty. I practice a faith.

— Robert Breault