Only those who dare to fail greatly can ever achieve greatly.

Unless you choose to do great things with it, it makes no difference how much you are rewarded, or how much power you have.

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

Small opportunities are often the beginning of great enterprises.

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

Silence is one of the great arts of conversation.

Every happening, great and small, is a parable whereby God speaks to us, and the art of life is to get the message.

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

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

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