There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.

The only way a man can remain consistent amid changing circumstances is to change with them while preserving the same dominating purpose.

Although personally I am quite content with existing explosives, I feel we must not stand in the path of improvement.

The oldest habit in the world for resisting change is to complain that unless the remedy to the disease should be universally applied it should not be applied at all. But you must start somewhere.

Science has given to this generation the means of unlimited disaster or of unlimited progress. There will remain the greater task of directing knowledge lastingly towards the purpose of peace and human good.

Never give in except to convictions of honour and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy.

With opportunity comes responsibility.