“Each success brings with it the potential of failure and each failure brings with it the potential of success.”

Great crises produce great men, and great deeds of courage.

We stand for freedom. That is our conviction for ourselves; that is our only commitment to others.

The one unchangeable certainty is that nothing is unchangeable or certain.

History will never accept difficulties as an excuse.

The time to repair the roof is when the sun is shining.

No sane society chooses to commit national suicide.

A tax cut means higher family income and higher business profits and a balanced federal budget.

The war against hunger is truly mankind’s war of liberation.

In a time of turbulence and change, it is more true than ever that knowledge is power.

Tolerance implies no lack of commitment to one’s own beliefs. Rather it condemns the oppression or persecution of others.

Tolerance implies no lack of commitment to one’s own beliefs. Rather it condemns the oppression or persecution of others.

No President should fear public scrutiny of his program.

My fellow Americans, ask not what your country can do for you, ask what you can do for your country.

There are risks and costs to action. But they are far less than the long range risks of comfortable inaction.

Those who dare to fail miserably can achieve greatly.

Truth is a tyrant-the only tyrant to whom we can give our allegiance. The service of truth is a matter of heroism.

Do what is easy and your life will be hard. Do what is hard and your life will become easy.

All true things must change and only that which changes remains true.

It is easier to make progress on mega-ambitious dreams. Since no one else is crazy enough to do it, you have little competition.

My job as a leader is to make sure everybody in the company has great opportunities, and that they feel they’re having a meaningful impact.

Do not swallow bait offered by the enemy. Do not interfere with an army that is returning home.

We innovate by starting with the customer and working backwards. That becomes the touchstone for how we invent.

Chance favors the prepared mind. The more you practice, the luckier you become.

Anything worth doing is worth doing well.