Only passions, great passions can elevate the soul to great things.

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

Small opportunities are often the beginning of great enterprises.

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

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

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

That some achieve great success, is proof to all that others can achieve it as well.

Nothing great in the world has ever been accomplished without passion.

If you cannot do great things, do small things in a great way.

Silence is the element in which great things fashion themselves together.