• the important thing is not to stop questioning. curiosity has its own reason for existing

• once we accept our limits, we can go beyond them

• pure mathematics is, in its way, the poetry of logical ideas

• joy in looking and comprehending is natures most beautiful gift

• weakness of attitude becomes weakness of character

• logic will get you from A to B. imagination will take you everywhere

• a person who never made a mistake never tried anything new

• learn from yesterday, live for today, hope for a tomorrow. the important thing is not to stop questioning

• peace cannot be kept by force; is can only be achieved by understanding

• science with religion is lame, religion without science is blind

• i have no special talent. i am only passionately curious

• the only source of knowledge is experience

• it is the supreme art of the teachers to awaken joy in creative expression and knowledge

• only two things are infinite, the universe and human stupidity, and im not sure about the former

• the difference between stupidity and genius is that genius has a limits

• whoever is careless with the truth in small matters cannot be trusted with important matters

• we cannot solve our problems with the same thinking we used when we created them

• education is what reminds after one has forgotten what one has learn in school

• the true sign of intelligence is not knowledge but imagination