You cannot truly listen to anyone and do anything else at the same time.

Science may set limits to knowledge, but should not set limits to imagination.

The first thing you'll have to do, is the last thing you wished.

Yesterday is but today's memory and tomorrow is today's dream.

Most of us have far more courage than we ever dreamed possible

How often it is that the angry man rages denial of what his inner self is telling him.

Knowledge speaks, but wisdom listens

A precedent embalms a principle.

Not everything that can be counted counts, and not everything that counts can be counted.

I hear and I forget. I see and I remember. I do and I understand.

Men become wise just as they become rich, more by what they save than by what they receive.

In any moment of decision, the best thing you can do is the right thing. The worst thing you can do is nothing.

The smaller the mind, the greater the conceit.

Think globally, act locally.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

The only real mistake is the one from which we learn nothing.

It is not titles that honor men, but men that honor titles.

I've never known any trouble than an hour's reading didn't assuage.

Act enthusiastic and you will be enthusiastic

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Having a great intellect is no path to being happy.