Small opportunities are often the beginning of great enterprises.

Dreams must be heeded and accepted. For a great many of them come true.

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

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

The great thing in the world is not so much where we stand, as in what direction we are moving.

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

My success was not based so much on any great intelligence but on great common sense.

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

To be conscious that you are ignorant of the facts is a great step to knowledge.

It is not enough to have great qualities We should also have the management of them.