It is difficult to achieve a spirit of genuine cooperation as long as people remain indifferent to the feelings and happiness of others.

The powers of the mind are like the rays of the sun when they are concentrated they illumine.

Truth conquers slowly. There is a wondrous vitality in Error.

To get the full value of joy you must have someone to divide it with.

The greatest sin is to think yourself weak.

I believe in the possibility of time travel and that it has already happened.

Experience is simply the name we give our mistakes.