Albert Einstein

A person who never made a mistake never tried anything new

–Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.

— Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius – and a lot of courage – to move in the opposite direction. 

–The most incomprehensible thing about the world is that it is comprehensible.

–A happy man is too satisfied with the present to dwell too much on the future

–The important thing is not to stop questioning. Curiosity has its own reason for existing.