E=mc2. Energy equals mass times the speed of light squared

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut

I cannot seriously believe in it [quantum theory] because the theory cannot be reconciled with the idea that physics should represent a reality in time and space, free from spooky actions at a distance [spukhafte Fernwirkungen].

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

To one bent on age, death will come as a release. I feel this quite strongly now that I have grown old myself and have come to regard death like an old debt, at long last to be discharged.

What use are socks? They only produce holes.

Information is not knowledge. The only source of knowledge is experience. You need experience to gain wisdom.