Common sense is the collection of prejudices acquired by age eighteen.
It is beyond a doubt that all our knowledge begins with experience.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
I have no special talents. I am only passionately curious.
Investigate, educate and organize.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
What is now proved was once only imagined.
The knowledge of all things is possible
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
The only good is knowledge and the only evil is ignorance.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Patience is a virtue, and I'm learning patience. It's a tough lesson.
A little knowledge is a dangerous thing. So is a lot.
I am indebted to my father for living, but to my teacher for living well.
The most savage controversies are those about matters as to which there is no good evidence either way.
The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
Men are born ignorant, not stupid. They are made stupid by education.
What is freedom of expression? Without the freedom to offend, it ceases to exist.