There is nothing more uncommon than common sense.

If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.

Generosity is giving more than you can, and pride is taking less than you need.

We thought that we had the answers, it was the questions we had wrong.

Good means not merely not to do wrong, but rather not to desire to do wrong.

Wise men speak because they have something to say; Fools because they have to say something.

Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.

And this sensitivity will create new friendships for you - friendships with trees, with birds, with animals, with mountains, with rivers, with oceans, with stars. Life becomes richer as love grows.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

One just needs a little alertness to see and find out: Life is really a great cosmic laughter.

Instinct is a marvellous thing. It can neither be explained nor ignored.

The secret of life, though, is to fall seven times and to get up eight times.

Only idiots refuse to change their minds.

It is neither good nor bad, but thinking makes it so.

If you don't stand for something you will fall for anything.

Immoderate desire is the mark of a child, not a man.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

There are no eternal facts, as there are no absolute truths.

Property is surely a right of mankind as real as liberty.

A single lie destroys a whole reputation of integrity.