A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

Education is what survives when what has been learned has been forgotten.

I did not direct my life. I didn't design it. I never made decisions. Things always came up and made them for me. That's what life is.

The way positive reinforcement is carried out is more important than the amount.

We shouldn't teach great books; we should teach a love of reading.

The consequences of an act affect the probability of its occurring again.

The real problem is not whether machines think but whether men do.

Society attacks early, when the individual is helpless.

If you're old, don't try to change yourself, change your environment.

Give me a child and I'll shape him into anything.