When we are sure that we are on the right road there is no need to plan our journey too far ahead. No need to burden ourselves with doubts and fears as to the obstacles that may bar our progress. We cannot take more than one step at a time.

Ezra was right half the time and when he was wrong he was so wrong you were never in any doubt about it.

When in doubt take more time.

I'd like to say to all my fans out there thanks for the support. And to all my doubters thank you very much because you guys have also pushed me.

Standing beneath the white light of an Apple store is like standing on a Stanley Kubrick movie set. His '2001: A Space Odyssey' predicted Jobs and a future where technology was our friend. Kubrick of course didn't like what he saw. And occasionally I have my doubts.

We know that when it comes to technology and the economy if you're not constantly moving forward then - without a doubt - you're moving backwards.

Without any doubt at all teacher quality is the fundamental differentiator. Not just incidentally of education but I would argue probably the biggest single differentiator of success for the nations of the 21st Century.

I very much dislike the intolerance and moralism of many Christians and feel more sympathy with Honest Doubters than with them.

A man desires praise that he may be reassured that he may be quit of his doubting of himself he is indifferent to applause when he is confident of success.

The source of my power and strength is God and I know it without a shadow of a doubt.