I have noticed that nothing I have never said ever did me any harm.

I will not let anyone walk through my mind with their dirty feet.

I believe today that my conduct is in accordance with the will of the Almighty Creator

No snowflake in an avalanche ever feels responsible.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

No flying machine will ever fly from New York to Paris.

A man of honour should never forget what he is because he sees what others are.

One of the great penalties those of us who live our lives in full view of the public must pay is the loss of that most cherished birthright of man's, privacy.

Thought is free.

What is to give light must endure burning.

Real stupidity beats artificial intelligence every time.

A great city is the place to escape the true drama of provincial life, and find solace in fantasy.

Delay always breeds danger. To protract a great design is often to ruin it.

Every man's memory is his private literature.

Too often we enjoy the comfort of opinion without the discomfort of thought.

To the young people I say, you are a gift to your communities and indeed the world. You are our hope and our future.

I want to put a ding in the universe.

Memory... is an internal rumour.

Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday.

Purity of heart is to will one thing.

Gold and silver from the dead turn often into lead.