If we open a quarrel between past and present, we shall find that we have lost the future.

Hope is patience with the lamp lit.

A single sunbeam is enough to drive away many shadows.

Forgiveness is the key to action and freedom.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

All the knowledge I possess everyone else can acquire, but my heart is all my own.

Knowledge is like money: to be of value it must circulate, and in circulating it can increase in quantity and, hopefully, in value.

I never think of the future - it comes soon enough.

Laughter is the closest distance between two people.

Even the knowledge of my own fallibility cannot keep me from making mistakes. Only when I fall do I get up again.