The primary cause of unhappiness is never the situation but your thoughts about it.

If a political party does not have its foundation in the determination to advance a cause that is right and that is moral, then it is not a political party; it is merely a conspiracy to seize power.

He’s not perfect. You aren’t either, and the two of you will never be perfect. But if he can make you laugh at least once, causes you to think twice, and if he admits to being human and making mistakes, hold onto him and give him the most you can.

Love does not cause suffering: what causes it is the sense of ownership, which is love’s opposite.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

The surest way to work up a crusade in favor of some good cause is to promise people they will have a chance of maltreating someone. To be able to destroy with good conscience, to be able to behave badly and call your bad behavior ‘righteous indignation’ — this is the height of psychological luxury, the most delicious of moral treats.