I learned the value of hard work by working hard.

One fails forward toward success.

Leadership to me means duty, honor, and country. It means character, and it means listening from time to time.

Affirmation without discipline is the beginning of delusion.

Education is the key to success in life, and teachers make a lasting impact in the lives of their students.

I never learn anything talking. I only learn things when I ask questions.

It is what we know already that often prevents us from learning.

They say a little knowledge is dangerous, but it's not half as bad as a lot of ignorance.

Learning never exhausts the mind.

A good decision is based on knowledge and not on numbers.

When your values are clear to you, making decisions becomes easier.

If a window of opportunity appears, don't pull down the shade.

I have the simplest tastes. I am always satisfied with the best.

Millions saw the apple fall, but Newton was the one who asked why.

A wise man can learn more from a foolish question than a fool can learn from a wise answer.

People are not disturbed by things, but by the view they take of them.

Doubt grows with knowledge.

Perplexity is the beginning of knowledge.

He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors.

Never stop learning; knowledge doubles every fourteen months.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

Even if I died in the service of the nation, I would be proud of it. Every drop of my blood will contribute to the growth of this nation and make it strong and dynamic. 

Happiness is a direction, not a place.

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

Don't judge each day by the harvest you reap but by the seeds that you plant.

No legacy is so rich as honesty.

If we have no peace, it is because we have forgotten that we belong to each other.

Simplicity is the ultimate sophistication.

Every addition to true knowledge is an addition to human power.

Success is the sum of small efforts - repeated day in and day out.

When ambition ends, happiness begins.

If we open a quarrel between past and present, we shall find that we have lost the future.

Hope is patience with the lamp lit.

A single sunbeam is enough to drive away many shadows.

Forgiveness is the key to action and freedom.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

All the knowledge I possess everyone else can acquire, but my heart is all my own.

Knowledge is like money: to be of value it must circulate, and in circulating it can increase in quantity and, hopefully, in value.

I never think of the future - it comes soon enough.

Laughter is the closest distance between two people.

Even the knowledge of my own fallibility cannot keep me from making mistakes. Only when I fall do I get up again.

Consistency is the last refuge of the unimaginative.

We are drowning in information but starved for knowledge.

Real knowledge is to know the extent of one's ignorance.

Better keep yourself clean and bright; you are the window through which you must see the world.

Life consists not in holding good cards but in playing those you hold well.

It is harder to conceal ignorance than to acquire knowledge.

Humility and knowledge in poor clothes excel pride and ignorance in costly attire.

Having knowledge but lacking the power to express it clearly is no better than never having any ideas at all.

Knowledge has to be improved, challenged, and increased constantly, or it vanishes.