I require myself not to be equal to the best, but to be better then the bad.

The great pilot can sail even when his canvass is rent.

Crime requires further crime to conceal it.

How many discoveries are reserved for the ages to come when our memory shall be no more, for this world of ours contains matter for investigation for all generations.

But when you are looking on anyone as a friend when you do not trust him as you trust yourself, you are making a grave mistake, and have failed to grasp sufficiently the full force of true friendship.

There exists no more difficult art than living.

There is no power greater than true affection.