The only good is knowledge and the only evil is ignorance.

When you know better you do better.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

If I have seen further it is by standing on the shoulders of Giants.

Civilization is a race between disaster and education.

Reading is to the mind what exercise is to the body.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Knowing is not enough; we must apply. Willing is not enough; we must do.

Investigate, educate and organize the country must progress, productive works and industries are the main avenues at present next to education for the advancement of the country

Learning never exhausts the mind.

It is possible to fly without motors, but not without knowledge and skill.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

Knowledge becomes evil if the aim be not virtuous.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

What is now proved was once only imagined.

My weapon is literature

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

If you want the present to be different from the past, study the past.