Success in life, in anything, depends upon the number of persons that one can make himself agreeable to.

Teach a parrot the terms 'supply and demand' and you've got an economist.

He who has health, has hope; and he who has hope, has everything.

Long stormy spring-time, wet contentious April, winter chilling the lap of very May; but at length the season of summer does come.

No man lives without jostling and being jostled; in all ways he has to elbow himself through the world, giving and receiving offence.

Endurance is patience concentrated.

I've got a great ambition to die of exhaustion rather than boredom.

Nature alone is antique, and the oldest art a mushroom.

A strong mind always hopes, and has always cause to hope.

A loving heart is the beginning of all knowledge.

Of all acts of man repentance is the most divine. The greatest of all faults is to be conscious of none.

Do not be embarrassed by your failures, learn from them and start again.

The first time I rode a bike I was four or five. I crashed into the back of a car.

The Church exists for nothing else but to draw men into Christ.

A good problem statement often includes what is known, what is unknown, and what is sought.

I imagine a future aircraft, which will take off vertically, fly as usual, and land vertically. This flying machine should have no moving parts. This idea came from the huge power of cyclones.

The beatitudes say, "Blessed are the poor". They don't say, "Blessed are those who care for the poor."

Of course reading and thinking are important but, my God, food is important too.

Political power means the capacity to regulate national life through national representatives.

Nothing worth knowing can be taught.

My name means freedom in Irish.