Cultivate all your faculties; you must either use them or lose them

In this world we do not see things as they are. We see them as we are, because what we see depends mainly on what we are looking for.

We often hear of people breaking down from overwork, but in nine out of ten they are really suffering from worry or anxiety.

Happiness is a condition of mind not a result of circumstances.

We must be careful what we read, and not, like the sailors of Ulysses, take bags of wind for sacks of treasure.

Our own happiness ought not to be our main objective in life.

False pleasures come from without and are imperfect: happiness is internal and our own.