99 percent of success is built on failure.

Failures, repeated failures, are sign-posts on the road to achievement. The only time you don't want to fail is the last time you try something (and it works).

Do not bring me your successes; they weaken me. Bring me your problems; they strengthen me.

The price of progress is trouble.

People see the wrongness in an idea much quicker that the rightness.

People are very open-minded about new things - as long as they're exactly like the old ones.

I think that the greatest education in the world is the education which helps one to be able to do the right things at the time it has to be done.