Business is never so healthy as when, like a chicken, it must do a certain amount of scratching around for what it gets.  

Let us not be satisfied with just giving money. Money is not enough, money can be got, but they need your hearts to love them. So, spread your love everywhere you go.

I am prepared to die, but there is no cause for which I am prepared to kill.

Personal beauty is a greater recommendation than any letter of reference.

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

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma - which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition.

Don't make friends who are comfortable to be with. Make friends who will force you to lever yourself up.  

A mind all logic is like a knife all blade. It makes the hand bleed that uses it.

A healthy body is an ideal home for a healthy mind.

I want to put a ding in the universe.

 It is the prime responsibility of every citizen to feel that his country is free and to defend its freedom is his duty. 

I will prepare and some day my chance will come.