I think knowing what you cannot do is more important than knowing what you can.

I think knowing what you cannot do is more important than knowing what you can.

Good instincts usually tell you what to do before your head has figured it out.

Good instincts usually tell you what to do before your head has figured it out.

It's the men behind who "make" the man ahead.

It's the men behind who "make" the man ahead.

Old age and sickness bring out the essential characteristics of a man.

Old age and sickness bring out the essential characteristics of a man.

We own almost all our knowledge not to those who have agreed but to those who have differed.

We own almost all our knowledge not to those who have agreed but to those who have differed.

The greatest potential for control the ends to exist at the point where action takes place.

The greatest potential for control the ends to exist at the point where action takes place.

The best current evidence is that media are mere vehicles that deliver instruction but do not influence student achievement any read more

The best current evidence is that media are mere vehicles that deliver instruction but do not influence student achievement any more than the truck that delivers groceries causes change in our nutrition.

We give advice by the bucket, but take it by the grain.

We give advice by the bucket, but take it by the grain.

As human beings, our greatness lies not so much in being able to remake the world - that is the read more

As human beings, our greatness lies not so much in being able to remake the world - that is the myth of the atomic age - as in being able to remake ourselves. -Mahatma Gandhi.