The word 'happiness' would lose its meaning if it were not balanced by sadness.

• Knowledge rests not upon truth alone, but upon error also.
• Knowing your own darkness is the best method for dealing with the darknesses of other people.
• If there is anything that we wish to change in the child, we should first examine it and see whether it is not something that could better be changed in ourselves.
• We cannot change anything until we accept it. Condemnation does not liberate, it oppresses.
• Shrinking away from death is something unhealthy and abnormal which robs the second half of life of its purpose.
• Who looks outside, dreams who looks inside, awakes.
• Your vision will become clear only when you can look into your own heart. Who looks outside, dreams who looks inside, awakes.
• We deem those happy who from the experience of life have learnt to bear its ills without being overcome by them.
• Follow that will and that way which experience confirms to be your own.
• Great talents are the most lovely and often the most dangerous fruits on the tree of humanity. They hang upon the most slender twigs that are easily snapped off.