Albert Einstein

Without deep reflection one knows from daily life that one exists for other people.

Imagination is everything. It is the preview of life's coming attractions.

Life is like riding a bicycle. To keep your balance, you must keep moving.

The monotony and solitude of a quiet life stimulates the creative mind.

Only a life lived for others is a life worthwhile.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.

Common sense is the collection of prejudices acquired by age eighteen.