A great pleasure in life is doing what people say you cannot do.

A great part of courage is the courage of having done the thing before.

All great and beautiful work has come of first gazing without shrinking into the darkness.

Beware of little expenses. A small leak will sink a great ship.

There is no pain so great as the memory of joy in present grief.

Great minds discuss ideas average minds discuss events small minds discuss people.

Some are born great, some achieve greatness, and some have greatness thrust upon them.

Silence is one of the great arts of conversation.

To walk around with an ego is a bad thing. To have confidence in yourself is a great thing.

Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.