"The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."

The best thing a human being can do is to help another human being know more.

The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.

Perception is the result of the activity of the five senses; through sensation, we come to know the world.

Losses make you studious, not profits.