To be happy is only to have freed one's soul from the unrest of unhappiness.

If the bee disappeared off the face of the earth, man would only have four years left to live.

At every crossroad on the way that leads to the future, each progressive spirit is opposed by a thousand men appointed to guard the past.

The value of ourselves is but the value of our melancholy and our disquiet.

An act of goodness is of itself an act of happiness. No reward coming after the event can compare with the sweet reward that went with it.

An obstacle is not a discouragement. It may become one, but only with our own consent. So long as we refuse to be discouraged, we cannot be discouraged.

Our reason may prove what it will: our reason is only a feeble ray that has issued from Nature.