Things you can get access to, you should never memorize.

Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.

There is nothing divine about morality, it is a purely human affair.

I believe in intuitions and inspirations...I sometimes FEEL that I am right. I do not KNOW that I am.

Concern for man himself and his fate must always form the chief interest of all technical endeavors, concern for the great unsolved problems of the organization of labor and the distribution of goods-in order that the creations of our mind shall be a blessing and not a curse to mankind. Never forget this in the midst of your diagrams and equations.

I soon learned to scent out that which was able to lead to fundamentals and to turn aside from everything else, from the multitude of things which clutter up the mind and divert it from the essential.

How can he possibly be humble? He hasn't done anything yet.