It is only to the individual that a soul is given.
The whole of science is nothing more than a refinement of everyday thinking.
Science is a wonderful thing if one does not have to earn one's living at it.
Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.
A country cannot simultaneously prepare and prevent war.
Gravitation is not responsible for people falling in love.