Not everything that can be counted counts, and not everything that counts can be counted.
I do not believe that the Good Lord plays dice.
Well-being and happiness never appeared to me as an absolute aim. I am even inclined to compare such moral aims to the ambitions of a pig.
The definition of insanity is doing the same thing over and over again and expecting different results.
One cannot simultaneously prevent and prepare for war.
An attempt at visualizing the Fourth Dimension Take a point, stretch it into a line, curl it into a circle, twist it into a sphere, and punch through the sphere.
This is what the painter, the poet, the speculative philosopher, and the natural scientists do, each in his own fashion.
Try not to become a man of success but rather to become a man of value.
Strange is our situation here upon earth. Each of us comes for a short visit, not knowing why, yet sometimes seeming to divine a purpose. From the standpoint of daily life, however, there is one thing we do know that man is here for the sake of other men.
Science can only ascertain what is, but not what should be, and outside of its domain value judgments of all kinds remain necessary.
Keep on sowing your seed, for you never know which will grow -- perhaps it all will.
If we knew what we were doing it wouldn't be research.
The formulation of a problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.
You can't solve a problem on the same level you created it.
Problems cannot be solved by the same level of thinking that created them.
The only way to escape the personal corruption of praise is to go on working.
The only justifiable purpose of political institutions is to ensure the unhindered development of the individual.
Many of the things you can count, don't count. Many of the things you can't count, really count.
I never teach my pupils I only attempt to provide the conditions in which they can learn.
The led must not be compelled, they must be able to choose their own leader.
I consider it important, indeed urgently necessary, for intellectual workers to get together, both to protect their own economic status and, also, generally speaking, to secure their influence in the political field.
Know where to find the information and how to use it - That's the secret of success.
In that way imagination and intelligence enter into our existence in the part of servants of the primary instincts.
Your imagination is your preview of life's coming attractions.
The most evident difference springs from the important part which is played in man by a relatively strong power of imagination and by the capacity to think, aided as it is by language and other symbolically devices.
Picture Quotes to Inspire and Delight